Goldstone Radar Observations Planning: (137170) 1999 HF1, 2022 ER5, 2022 DP3, and 2022 EO4

Background 


(137170) 1999 HF1
1999 HF1 was discovered on April 20, 1999 by LONEOS.  
1999 HF1 is a binary near-Earth asteroid (Pravec et al. 2002) that has not yet been
observed by radar. 

This object has been observed extensively with photometry, spectroscopy, and infrared radiometry.
The primary has a rotation period of 2.32 h and a lightcurve amplitude of about 0.1 mag, suggesting
a shape with low elongation.  Published estimates of the diameter vary from 3.8 to 5.1 km.
Consequently, 1999 HF1 could be one of the largest known binary NEAs.

The spectral class is indeterminate: X or C/X.  The diameter estimates from
infrared observations correspond to optical albedos between 0.1 to 0.5.  The X group is ambiguous in the
absence of an optical albedo measurement and could indicate an E-, M-, or P-type taxonomy.  These spectral
classes imply very different compositions, so the radar observations (even a null result) will provide
useful measurements.   If HF1 is an E-type object, then the diameter could be ~2.5 km, and we will struggle
to detect echoes.  If this is a metallic M-class object, then the radar albedo could be very high and the
SNRs might be strong enough for coarse-resolution imaging.

A major goal of the observations is to estimate the diameter, compute the optical albedo, and 
constrain the spectral class.

The secondary has an orbital period of 14.0 h that is among the most rapid known for NEAs with companions.
The secondary/primary diameter ratio is about 0.2, implying a secondary diameter of roughly 0.8 km if the
diameter of the primary is about 3.8 km.

1999 HF1 will make a relatively distant approach within 0.182 au in mid March and
Goldstone observations are scheduled on three tracks between March 14 - 20.  
We are expecting SNRs sufficient for CW and ranging observations but probably not strong
enough for detailed imaging.



2022 ER5
2022 ER5 was discovered on March 11, 2022 by Pan-STARRS 2.  This asteroid will approach within
two lunar distances (0.0054 au) on March 20 and it will be a strong radar target. 

Nothing is known about its physical properties other than its absolute magnitude of 25.6, which 
suggests a diameter of roughly 23 meters.   

The view periods for 2022 ER5 overlap those scheduled for 1999 HF1 on March 18 and 19/20.

This asteroid will brighten to about 17th magnitude, but it will be less than 40 degrees from the full Moon
until March 19, so optical observations could be challenging. 
Additional astrometry is necessary to reduce the pointing uncertainties and would be greatly
appreciated!




2022 DP3
2022 DP3 was discovered on February 26, 2022 at the Kitt Peak Bok 2.25 m telescope in Arizona.

This asteroid has an absolute magnitude 24.6 that suggests a diameter of 30-40 meters but
otherwise nothing is known about its physical properties.

2022 DP3 will approach within 0.0077 au (3 lunar distances) on March 15, when it should
be a strong radar target suitable for imaging at 3.75 meter resolution.

View periods for 2022 DP3 overlap those already scheduled for 1999 HF1 on one day: March 14.
DP3 should be a much stronger target than HF1 and it is likely we will start the track
by observing DP3.  




2022 EO4
2022 EO4 was discovered by the Mt. Lemmon Survey on 2022 March 9.  

2022 EO4 has an absolute magnitude of 25.4 that suggests a diameter of 20-30 meters.  Nothing
else is known about its physical properties.

This asteroid will approach within 0.0071 au on March 13 and it could be a moderately strong radar
target with SNRs strong enough for CW observations, ranging, and possibly imaging.  
The view periods overlap time already
scheduled for 1999 HF1 during the last hour of the track on March 14.  





Orbital and Physical Characteristics  
Name                     1999 HF1                 2022 DP3           2022 EO4             2022 ER5
Number                   137170                   Not numbered       Not numbered         Not numbered
Discoverer               LONEOS                   Kitt Peak-Bok      Mt. Lemmon Survey    Pan-STARRS 2
Discovery date           1999 Apr 20              2022 Feb 26        2022 Mar  9          2022 Mar 11
orbit type               Aten                     Apollo             Apollo               Apollo

Close approach dist.     0.182 au                 0.0077au (3 LD)    0.0071 au (2.8 LD)   0.0054 au (2.1 LD)
Close approach date      2022 March 16            2022 March 15      2022 Mar 13          2022 Mar 20

semimajor axis           0.819 au                 1.258 au           1.750 au             2.135 au
eccentricity             0.462 au                 0.237              0.563                0.567
inclination             25.7 deg                  17.5 deg           6.9 deg              10.3 deg 
Orbital period           0.741 years              1.41 y             2.32 y               3.12 y
Perihelion distance      0.440 au                 0.960 au           0.765 au             0.924 au
aphelion distance        1.197 au                 1.556 au           2.735 au             3.346 au
MOID                     0.173 au                 0.0063 au          0.0051 au            0.00405 au

absolute magnitude (H)   14.6                     24.6               25.4                 25.6
Primary diameter         3.8 km                  ~37 meters         ~26 meters           ~23 meters
Secondary diameter      ~0.8  km 
Primary rotation period  2.32 h                   Unknown            Unknown              Unknown
lightcurve amplitude    ~0.1                      Unknown            Unknown              Unknown
Secondary orbital period 14.0 h synchronous
spectral class           X, C                     Unknown            Unknown              Unknown
                         Binary                          

LD = 1 lunar distance (0.00257 au or 384,400 km)

Last update: 2022 March 21

Goldstone Radar Echoes from Asteroid 1999 HF1


Echo power spectrum from 1999 HF1 obtained on March 18.
Echo power in standard deviations is plotted as a function of Doppler frequency.
The frequency resolution is 5 Hz.  

The bandwidth of about 100 Hz and the 2.32 h rotation period place a lower
bound on the maximum pole-on breadth of 2.55 km.  At face value, 2.55 km is 
smaller than previous estimates, but it's a _lower_ bound, so it's consistent.
One possibility is that the subradar latitude was well off the equator 
(note that the pole direction is unknown).

The circular polarization ratio is about 0.4.  E-class NEAs observed by radar
have ratios larger than 0.8, so it seems very unlikely that HF1 is an E-type object.


Echo power spectrum obtained on March 19-20.

Goldstone Radar Echoes from Asteroid 2022 ER5


Echo power spectrum from 2022 ER5 obtained on March 20.
Echo power in standard deviations is plotted as a function of Doppler frequency.
The frequency resolution is 1 Hz.  This echo was obtained using JPL/Horizons
solution 7, which had a 3-sigma Doppler uncertainty of about 400 Hz.  Consequently
the Doppler correction of about -50 Hz is well within 1-sigma.

The bandwidth of about 10 Hz and the absolute magnitude of 25.5, which suggests
a diameter of 20-30 meters, strongly imply that this asteroid is a rapid rotator
with a period of less than about 0.5 hours.  The round-trip light travel time during
these observations was about 5.5 seconds (corresponding to a distance of about 2.1
Earth-Moon distances). 


Echo power spectrum obtained using solution 8.  This spectrum is a weighted sum
of 17 runs at 1 Hz resolution.

Discovery M.P.E.C.

 

1999 HF1
https://www.minorplanetcenter.net/mpec/J99/J99H17.html

2022 ER5
https://www.minorplanetcenter.net/mpec/K22/K22EJ7.html

2022 DP3
https://www.minorplanetcenter.net/mpec/K22/K22DB7.html

2022 EO4
https://www.minorplanetcenter.net/mpec/K22/K22EG0.html

SNR Calculations

 

1999 HF1
GOLDSTONE SNRs
1999 HF1:  D = 3.8 km,  P = 2.32 h,  OC albedo = 0.1

3.8 km is the smallest of the diameters published for this object.  Other values are 
between 4.4 - 5.1 km.  Consequently, the SNRs could be stronger than shown below.

wk   DOY    start date    window      RA, dec   dist  runs  SNR/day SNR/run
10 71-72 2022 Mar 12-13  14:29-01:52  356, +30  0.186   110     19      2
10 72-73 2022 Mar 13-14  14:16-01:58  356, +33  0.184   115     20      2 
11 73-74 2022 Mar 14-15  14:02-02:04  356, +37  0.182   119     21      2  Scheduled on Mar 14    1405-1720
11 74-75 2022 Mar 15-16  13:48-02:11  356, +41  0.182   123     21      2 
11 75-76 2022 Mar 16-17  13:33-02:19  356, +44  0.182   126     22      2 
11 76-77 2022 Mar 17-18  13:17-02:27  356, +48  0.183   130     22      2  Scheduled on Mar 18    0030-0230
11 77-78 2022 Mar 18-19  13:01-02:36  356, +51  0.185   133     21      2
11 78-79 2022 Mar 19-20  12:43-02:47  356, +54  0.187   136     21      2  Scheduled on Mar 19-20 2105-0100
11 79-80 2022 Mar 20-21  12:24-03:00  356, +58  0.190   139     20      2
12 80-81 2022 Mar 21-22  12:03-03:15  356, +61  0.193   142     19      2
12 81-82 2022 Mar 22-23  11:40-03:33  356, +64  0.197   145     18      2

Elevations will be less than 75 deg during all the tracks.



2022 ER5
2022 ER5:  D = 0.024 km,  P = 0.5 h,  OC albedo = 0.1

 start date     window       RA, dec   dist   runs     SNR/day   SNR/run
2022 Mar 17    01:14-09:34   138,  -3  0.022    696       17       1
2022 Mar 18    00:51-09:52   138,  +4  0.015   1094       82       3   Overlaps 1999 HF1 0055-0230
2022 Mar 19    00:07-10:41   137, +20  0.009   2188      760      18
2022 Mar 19-20 22:01-07:29   128, +72  0.005   6635     7100      98   Overlaps 1999 HF1 2205-0100
2022 Mar 20    07:29-14:08    38, +86  0.006   7728     6400      76
2022 Mar 20-21 14:08-00:52   328, +71  0.007   5218     3100      47
2022 Mar 21    10:43-23:24   321, +43  0.012   1914      230       6
2022 Mar 22    11:13-22:55   320, +34  0.019   1144       39       1
2022 ER5 is circumpolar for a couple of days.



2022 DP3
2022 DP3:  D = 0.037 km,  P = 0.5 h,  OC albedo = 0.1

 start date    window       RA, dec   dist   runs     SNR/day   SNR/run
2022 Mar 11  05:08-21:05   250, +63  0.027   1056         20         1
2022 Mar 12  05:51-21:23   259, +60  0.021   1314         53         2
2022 Mar 13  07:01-21:42   272, +55  0.015   1701        190         5
2022 Mar 14  08:54-21:50   291, +40  0.010   2229        900        21  Overlaps 1999 HF1 1405-1720
2022 Mar 15  11:49-21:20   311,  +3  0.008   2127       2300        53
2022 Mar 16  16:35-19:04   330, -33  0.010    404        270        14

Moves too far south for Goldstone to track after March 16.




2022 EO4

2022 EO4:  D = 0.026 km,  P = 0.5 h,  OC albedo = 0.1

 start date    window        RA, dec   dist    runs      SNR/day   SNR/run
2022 Mar 11  04:51-10:07    165, -24  0.024     401          9         0
2022 Mar 12  06:38-08:28    170, -33  0.015     208         27         2
...too far south during closest approach on March 13...
2022 Mar 14  16:39-20:08    325, -31  0.011     547        140         6  Overlaps 1999 HF1 1640-1720
2022 Mar 15  14:56-22:02    332, -13  0.019     673         29         1
2022 Mar 16  14:33-22:30    334,  -7  0.028     519          7         0



 
Track Assignments




Goldstone tracks:
         UT         UT                    PDT                 Duration RTT    SNR/
DOY      Date       TX Window             TX Window           hh:mm    (sec)  run      
73       Mar 14     1405-1720  1999 HF1   0705-1020 Mar 14     3:15    182      2   Not observed due to equipment problems
73       Mar 14     1405-1720  2022 DP3   0705-1020 Mar 14     3:15     10     21   Not observed due to equipment problems
73       Mar 14     1640-1720  2022 EO4   0940-1020 Mar 14     0:40     11      6   Not observed due to equipment problems

77       Mar 18     0030-0230  1999 HF1   1730-1930 Mar 17     2:00    183      2
77       Mar 18     0055-0230  2022 ER5   1755-1930 Mar 17     1:35     15      3

78-79    Mar 19-20  2105-0100  1999 HF1   1405-1800 Mar 19     3:55    187      2
78-79    Mar 19-20  2205-0100  2022 ER5   1505-1800 Mar 19     2:55      5     98  



 


 
Uncertainties



1999 HF1
JPL/Horizons solution 468, # obs: 3799 (1999-2021) 
2022 March 4
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-13 00:00 *m  355.56739  30.36745  0.18549678251933       0.618         2.43       0.000323
 2022-Mar-14 00:00 *m  355.56320  33.93681  0.18354820316733       0.621         2.39       0.000319
 2022-Mar-15 00:00 *m  355.55615  37.53459  0.18237111170016       0.621         2.33       0.000316
 2022-Mar-16 00:00 *m  355.54709  41.13127  0.18195343356564       0.617         2.24       0.000315
 2022-Mar-17 00:00 *   355.53691  44.69780  0.18227482709630       0.610         2.13       0.000314
 2022-Mar-18 00:00 *   355.52658  48.20696  0.18330732771597       0.601         2.01       0.000314
 2022-Mar-19 00:00 *   355.51713  51.63452  0.18501642206139       0.589         1.88       0.000314
 2022-Mar-20 00:00 *   355.50973  54.96005  0.18736242495498       0.575         1.75       0.000314
 2022-Mar-21 00:00 *   355.50567  58.16738  0.19030200716984       0.560         1.61       0.000315



2022 ER5
JPL/Horizons solution 7, # obs: 54 (7 days)
2022 Mar 19
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-16 00:00 *m  138.47211  -7.14657  0.03016528364508       0.814      1387.63       0.060398
 2022-Mar-17 00:00 *   138.27860  -4.05545  0.02322747102202       1.108      1369.84       0.046617
 2022-Mar-18 00:00 *   137.95754   1.63373  0.01641740479871       1.437      1328.32       0.033108
 2022-Mar-19 00:00 *   137.22304  14.95671  0.00999067147471       2.597      1185.16       0.020389
 2022-Mar-20 00:00 *   133.11576  58.29222  0.00550609311666      21.644       392.81       0.011410 *
 2022-Mar-21 00:00 *   323.29372  59.97722  0.00781652868968      25.590       989.10       0.015442
 2022-Mar-22 00:00 *   320.56472  39.60336  0.01385957343706      16.814      1286.76       0.027230

JPL/Horizons solution 6, # obs: 42 (7 days)
2022 Mar 18
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-16 00:00 *m  138.47212  -7.14657  0.03016158704792       1.242      2298.15       0.100666
 2022-Mar-17 00:00 *   138.27861  -4.05545  0.02322462059067       1.542      2268.76       0.077844
 2022-Mar-18 00:00 *   137.95756   1.63372  0.01641538389703       2.007      2200.69       0.055472
 2022-Mar-19 00:00 *   137.22308  14.95671  0.00998943168958       9.466      1970.08       0.034385
 2022-Mar-20 00:00 *   133.11588  58.29243  0.00550540110439      66.492       731.68       0.019216 *
 2022-Mar-21 00:00 *   323.29355  59.97693  0.00781557774028      62.835      1605.61       0.025254
 2022-Mar-22 00:00 *   320.56466  39.60314  0.01385789549136      36.071      2123.35       0.044616

JPL/Horizons solution 5, # obs: 38 (5 days)
2022 Mar 17
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-16 00:00 *m  138.47214  -7.14661  0.03015134052915       1.578      2704.00       0.114431
 2022-Mar-17 00:00 *   138.27866  -4.05569  0.02321721715844       4.103      2669.01       0.087681
 2022-Mar-18 00:00 *   137.95766   1.63279  0.01641075742743      14.572      2584.10       0.061559 *
 2022-Mar-19 00:00 *   137.22342  14.95267  0.00998733209538      63.302      2270.47       0.037261
 2022-Mar-20 00:00 *   133.11998  58.27318  0.00550413421497     306.070      1044.69       0.020920 *
 2022-Mar-21 00:00 *   323.29592  59.98970  0.00781123966268     208.305      2174.96       0.032295
 2022-Mar-22 00:00 *   320.56497  39.60822  0.01385055347065      87.089      2554.29       0.056290

JPL/Horizons solution 3, # obs: 28 (3 days)
2022 Mar 14
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-16 00:00 *m  138.47238  -7.14720  0.03013916065028      17.020      3840.13       0.147093
 2022-Mar-17 00:00 *   138.27909  -4.05734  0.02320981762862      45.889      3782.28       0.112864
 2022-Mar-18 00:00 *   137.95852   1.62783  0.01640797891306     135.069      3619.77       0.082548 *
 2022-Mar-19 00:00 *   137.22568  14.93398  0.00998847998814     504.833      2958.92       0.059443
 2022-Mar-20 00:00 *   133.14023  58.19192  0.00550403158414    2201.405      7011.32       0.030376 *
 2022-Mar-21 00:00 *   323.30291  60.04131  0.00780078357557    1399.070      5296.52       0.069300
 2022-Mar-22 00:00 *   320.56512  39.62836  0.01383381984384     551.131      3981.91       0.111720

JPL/Horizons solution 2, # obs: 25 (2 days)
2022 Mar 13
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-16 00:00 *m  138.47251  -7.14756  0.03013284095445      44.863      4750.59       0.230944
 2022-Mar-17 00:00 *   138.27931  -4.05828  0.02320598596794     118.782      4680.05       0.198512
 2022-Mar-18 00:00 *   137.95896   1.62511  0.01640655005394     343.990      4491.98       0.172402 *
 2022-Mar-19 00:00 *   137.22684  14.92399  0.00998908538879    1269.289      4183.68       0.149215
 2022-Mar-20 00:00 *   133.15074  58.14918  0.00550395210089    5486.275     18234.17       0.070345 *
 2022-Mar-21 00:00 *   323.30661  60.06817  0.00779528680232    3478.090      9682.13       0.117876
 2022-Mar-22 00:00 *   320.56521  39.63872  0.01382505628796    1372.107      5147.13       0.179137



2022 DP3
JPL/Horizon solution 7, # obs: 59 (14 days), OCC = 7
2022 March 13
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-12 00:00 *m  253.30901  61.87001  0.02416962400731       2.332      2565.80       0.104798
 2022-Mar-13 00:00 *m  263.84598  58.57243  0.01839352367633       3.601      2458.50       0.079631
 2022-Mar-14 00:00 *m  278.48833  50.69230  0.01301188046474       7.560      2178.43       0.056232 
 2022-Mar-15 00:00 *m  297.10561  30.25682  0.00879787207899      21.076      1292.44       0.038042
 2022-Mar-16 00:00 *m  316.75410  -8.76886  0.00792713939471      35.169       706.80       0.034604

JPL/Horizons solution 4, # obs: 32 (10 days)
2022 March 8
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-12 00:00 *m  253.30910  61.87020  0.02418718046163      36.148      4806.91       0.200072
 2022-Mar-13 00:00 *m  263.84601  58.57278  0.01840698045077      82.826      4608.75       0.153600
 2022-Mar-14 00:00 *m  278.48822  50.69307  0.01302150776594     210.879      4108.80       0.110476 
 2022-Mar-15 00:00 *m  297.10526  30.25889  0.00880443379524     570.218      2895.50       0.075283
 2022-Mar-16 00:00 *m  316.75345  -8.76538  0.00793281529432     848.567      2732.71       0.064935



2022 EO4
JPL/Horizons solution 3, # obs: 60 (3 days)
2022 March 12
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-12 00:00 *m  167.72507 -29.31645  0.01787641123273       2.501      3009.00       0.065128
 2022-Mar-13 00:00 *m  178.91964 -47.94730  0.01024483022267      17.688      2353.15       0.037535
 2022-Mar-14 00:00 *m  296.30323 -62.15974  0.00729641726508      95.628       821.63       0.026757 
 2022-Mar-15 00:00 *m  327.75211 -24.33518  0.01282219822766      59.845      2725.44       0.046676
 2022-Mar-16 00:00 *m  332.73074 -11.32076  0.02094527060026      36.891      3087.94       0.076134

JPL/Horizons solution 2, # obs: 57 (1 days)
2022 March 10
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2022-Mar-12 00:00 *m  167.72512 -29.31672  0.01787592065318      83.097      3290.70       0.072755
 2022-Mar-13 00:00 *m  178.92063 -47.94883  0.01024430212494     531.531      2387.08       0.055167
 2022-Mar-14 00:00 *m  296.31200 -62.15590  0.00729639296247    1796.633      7910.66       0.026894 
 2022-Mar-15 00:00 *m  327.75340 -24.33266  0.01282273920726     888.310      4257.68       0.072952
 2022-Mar-16 00:00 *m  332.73138 -11.31942  0.02094603186352     471.707      3691.91       0.110946




Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illumination:

1999 HF1
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta    APmag   S-brt     S-O-T /r   T-O-M/MN_Illu%
 2022-Mar-13 00:00     355.57793  30.37110  0.18552505367127      17.    n.a.   33.4821 /T    97.4/ 73.3274
 2022-Mar-15 00:00     355.56806  37.53736  0.18239983048356      17.    n.a.   39.7752 /T   111.8/ 88.3661
 2022-Mar-17 00:00     355.55046  44.69964  0.18230368371489      16.    n.a.   46.1524 /L   122.1/ 97.8836
 2022-Mar-19 00:00     355.53270  51.63550  0.18504512651614   15.365    n.a.   52.3470 /L   126.7/ 99.3174
 2022-Mar-21 00:00     355.52377  58.16762  0.19033033012173   15.020    n.a.   58.1533 /L   125.4/ 91.2523
 2022-Mar-23 00:00     355.53511  64.18407  0.19780722398633   14.785    n.a.   63.4410 /L   120.0/ 74.6248
 2022-Mar-25 00:00     355.58261  69.63763  0.20711086916048   14.636    n.a.   68.1509 /L   112.8/ 52.8060
 2022-Mar-27 00:00     355.69193  74.53149  0.21789763998766   14.550    n.a.   72.2782 /L   105.0/ 30.5046
 2022-Mar-29 00:00     355.91454  78.90100  0.22986435285217   14.510    n.a.   75.8532 /L    97.0/ 12.4034
 2022-Mar-31 00:00     356.38793  82.79767  0.24275480002734   14.504    n.a.   78.9246 /L    88.9/  1.9821
 2022-Apr-02 00:00     357.69570  86.27756  0.25635832931989   14.522    n.a.   81.5476 /L    80.9/  0.6489
 2022-Apr-04 00:00      11.41770  89.37834  0.27050455751467   14.557    n.a.   83.7770 /L    73.4/  7.6537
 2022-Apr-06 00:00     170.52479  87.77654  0.28505686999093   14.605    n.a.   85.6637 /T    66.9/ 20.9223
 2022-Apr-08 00:00     173.00442  85.23155  0.29990609884412   14.661    n.a.   87.2530 /T    62.3/ 38.0883
 2022-Apr-10 00:00     173.77656  82.90930  0.31496498089178   14.723    n.a.   88.5843 /T    60.7/ 56.9649
 2022-Apr-12 00:00     174.20525  80.77882  0.33016358466434   14.789    n.a.   89.6916 /T    63.0/ 75.3497
 2022-Apr-14 00:00     174.51740  78.81244  0.34544569925257   14.857    n.a.   90.6040 /T    69.9/ 90.5286
 2022-Apr-16 00:00     174.78298  76.98661  0.36076607054422   14.927    n.a.   91.3460 /T    81.1/ 99.1175
 2022-Apr-18 00:00     175.03063  75.28128  0.37608825947048   14.997    n.a.   91.9389 /T    95.1/ 98.0258
 2022-Apr-20 00:00     175.27445  73.67938  0.39138279346436   15.066    n.a.   92.4007 /T   109.4/ 86.4511
 2022-Apr-22 00:00     175.52257  72.16641  0.40662537762417   15.136    n.a.   92.7471 /T   121.0/ 66.9947
 2022-Apr-24 00:00     175.78020  70.73004  0.42179526923075   15.204    n.a.   92.9918 /T   126.2/ 44.4500
 2022-Apr-26 00:00     176.05092  69.35992  0.43687407559343   15.271    n.a.   93.1464 /T   123.2/ 23.6877
 2022-Apr-28 00:00     176.33719  68.04732  0.45184502693664   15.337    n.a.   93.2212 /T   113.6/  8.4115
 2022-Apr-30 00:00     176.64060  66.78498  0.46669258970997   15.401    n.a.   93.2250 /T   100.3/  0.7652
 2022-May-02 00:00     176.96204  65.56679  0.48140228974120   15.463    n.a.   93.1654 /T    85.7/  1.2829
 2022-May-04 00:00     177.30174  64.38760  0.49596065020071   15.524    n.a.   93.0490 /T    71.5/  9.1549
 2022-May-06 00:00     177.65950  63.24305  0.51035515723124   15.584    n.a.   92.8815 /T    59.0/ 22.7921
 2022-May-08 00:00     178.03478  62.12940  0.52457420193191   15.641    n.a.   92.6678 /T    50.2/ 40.3480
 2022-May-10 00:00     178.42687  61.04338  0.53860701545116   15.697    n.a.   92.4122 /T    48.0/ 59.8307
 2022-May-12 00:00     178.83494  59.98215  0.55244366391233   15.750    n.a.   92.1186 /T    54.5/ 78.7322
 2022-May-14 00:00     179.25812  58.94317  0.56607516059260   15.802    n.a.   91.7903 /T    68.5/ 93.5225
 2022-May-16 00:00     179.69557  57.92412  0.57949363824060   15.853    n.a.   91.4301 /T    87.0/ 99.9547
 2022-May-18 00:00     180.14662  56.92284  0.59269230310345   15.901    n.a.   91.0408 /T   107.1/ 95.1235
 2022-May-20 00:00     180.61074  55.93733  0.60566486128826   15.948    n.a.   90.6249 /T   124.8/ 79.9353
 2022-May-22 00:00     181.08766  54.96578  0.61840462050413   15.993    n.a.   90.1847 /T   135.3/ 58.8148
 2022-May-24 00:00     181.57726  54.00658  0.63090390500436   16.036    n.a.   89.7225 /T   134.3/ 36.9658
 2022-May-26 00:00     182.07955  53.05834  0.64315402651858   16.078    n.a.   89.2405 /T   123.5/ 18.4194
 2022-May-28 00:00     182.59448  52.11991  0.65514554235678   16.118    n.a.   88.7406 /T   108.1/  5.7291
 2022-May-30 00:00     183.12189  51.19032  0.66686854377392   16.156    n.a.   88.2243 /T    91.1/  0.2201



2022 ER5
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta    APmag   S-brt     S-O-T /r   T-O-M/MN_Illu%
 2022-Mar-14 00:00     138.68427 -10.35409  0.04414246502843   20.381    n.a.  142.5941 /T    36.8/ 81.3687
 2022-Mar-15 00:00     138.55939  -9.03660  0.03712025055536   20.012    n.a.  142.1282 /T    30.2/ 88.3661
 2022-Mar-16 00:00     138.40653  -7.10001  0.03013474076134   19.567    n.a.  141.6725 /T    27.4/ 93.9852
 2022-Mar-17 00:00     138.19436  -3.99676  0.02320994499381   19.009    n.a.  141.1652 /T    30.1/ 97.8836
 2022-Mar-18 00:00     137.83956   1.71024  0.01641375314249   18.277    n.a.  140.2619 /T    38.2/ 99.7435 *
 2022-Mar-19 00:00     137.02530  15.04894  0.01000272186538   17.298    n.a.  136.5930 /T    52.4/ 99.3174
 2022-Mar-20 00:00     132.49844  58.19007  0.00553044560277   16.739    n.a.  111.3386 /T    83.4/ 96.4772 *
 2022-Mar-21 00:00     323.81434  60.18896  0.00781418026175   19.447    n.a.   66.3154 /L   110.3/ 91.2523
 2022-Mar-22 00:00     320.74846  39.73606  0.01383522185696      22.    n.a.   53.7843 /L   104.0/ 83.8460
 2022-Mar-23 00:00     320.08559  32.07228  0.02053275576618      23.    n.a.   50.3807 /L    92.8/ 74.6248
 2022-Mar-24 00:00     319.81656  28.20438  0.02741618011850      23.    n.a.   49.2492 /L    81.3/ 64.0847



2022 DP3
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta    APmag   S-brt     S-O-T /r   T-O-M/MN_Illu%
 2022-Mar-09 00:00     236.31999  64.69547  0.04222316015391   20.294    n.a.  103.8202 /L    93.9/ 36.5735
 2022-Mar-10 00:00     240.40267  64.27412  0.03616024086197   20.015    n.a.  102.2946 /L    90.9/ 45.9103
 2022-Mar-11 00:00     245.85602  63.49446  0.03013780016961   19.697    n.a.  100.1967 /L    89.1/ 55.3242
 2022-Mar-12 00:00     253.37085  61.96563  0.02419354304891   19.338    n.a.   97.1049 /L    89.0/ 64.5516
 2022-Mar-13 00:00     263.95069  58.69247  0.01841231903330   18.942    n.a.   92.0910 /L    92.0/ 73.3274
 2022-Mar-14 00:00     278.65600  50.84688  0.01302469079410   18.592    n.a.   82.8283 /L   101.2/ 81.3687 *
 2022-Mar-15 00:00     297.33593  30.45143  0.00880255050965   18.822    n.a.   63.7031 /L   124.4/ 88.3661
 2022-Mar-16 00:00     317.00406  -8.59624  0.00792325871664      21.    n.a.   39.1505 /L   163.6/ 93.9852
 2022-Mar-17 00:00     333.72768 -37.52923  0.01120978405516      21.    n.a.   41.8062 /L   153.2/ 97.8836
 2022-Mar-18 00:00     346.11964 -49.83775  0.01631377854620      21.    n.a.   49.7637 /L   136.0/ 99.7435



2022 EO4
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.             delta    APmag   S-brt     S-O-T /r   T-O-M/MN_Illu%
 2022-Mar-10 00:00     163.11035 -18.23291  0.03517953010261   19.288    n.a.  156.4896 /T    97.5/ 45.9103
 2022-Mar-11 00:00     164.53587 -21.96572  0.02638562711296   18.742    n.a.  153.4221 /T    90.0/ 55.3242
 2022-Mar-12 00:00     167.60914 -29.27101  0.01785110637725   18.064    n.a.  147.0332 /T    86.2/ 64.5516
 2022-Mar-13 00:00     178.68266 -47.93981  0.01021266108921   17.346    n.a.  128.7979 /L    94.8/ 73.3274
 2022-Mar-14 00:00     296.82905 -62.17967  0.00726700281930   18.684    n.a.   72.9149 /L   141.6/ 81.3687 *
 2022-Mar-15 00:00     327.92385 -24.23009  0.01281382528098      24.    n.a.   34.0576 /L   171.0/ 88.3661
 2022-Mar-16 00:00     332.82785 -11.25149  0.02094485367730      26.    n.a.   24.6216 /L   173.9/ 93.9852
 2022-Mar-17 00:00     334.78394  -5.64675  0.02961244748514      28.    n.a.   22.2408 /L   169.0/ 97.8836





 
Setups




Due to the primary's rotation period and diameter,  we 
are expecting a bandwidth of about 160 Hz.  For the secondary, we are expecting a bandwidth of
of roughly 6 Hz.

The standard 10 and 11 usec setups below will put about 13 Doppler bins
on the asteroid.  

CW setup:
TX polarization     RCP
RCV polarization    LCP & RCP
Frequency hops:     no hopping
Bandwidth:          5000 Hz 
TXoffset            +500 Hz
FFT                 5000 for 1 Hz resolution 


Ranging setups:
---------------------------------------------------------------------------
10-usec
baud             10 usec
code            127
PRP            1270 usec
FFT              64
ncoh              1 
bandwidth       787 Hz   
resolution       12.3 Hz
TXOFF          +100 Hz  (echo in bin 32 + 8 = 40)
---------------------------------------------------------------------------
11-usec 
baud             11 usec
code            127
PRP            1397 usec
FFT              64  
ncoh              1 
bandwidth       716 Hz   
resolution       11.2 Hz
TXOFF          +100 Hz  (echo in bin 32 + 9 = 41) 
-------------------------------------------------------------------------
1-usec 
baud              1 usec
code            255
FFT             128 
ncoh              1
bandwidth      3921.6 Hz   
resolution       30.6  Hz
TXOFF          +500 Hz 
Time delay extent: 38250 meters
The primary of 1999 HF1 is large enough that 1 usec would
be imaging. The SNRs probably won't be strong enough.
---------------------------------------------------------------------






 
Instructions

NOTE: Data should be moved to the appropriate subdirectories in
      aardvark:/export/data0/a137170/raw/



POINTING: 


  OSOD and predicts will be on aardvark:

...not available yet...


POINTING  
                                                          TX Offsets    
Date (UTC)   DOY  hhmmss    RA        Dec         Macro   LHA     Dec    RTT    OSOD

... to be added ...

Transmit offsets are given in millidegrees.  



PRDX.OUT.14f-14-14.??
TRANSMITTER: STATION #14,     RECEIVER: STATION #14
RECEIVER    U.T.         RANGE         DOPPLER      LHA      DEC      RA      EL




 
1999 HF1 GOLDSTONE MASTERLOG

==============================================================================
                                                   Receive                     TX
Setup     hops  dwell   code  ncoh    FFT   runs   start -stop   OSOD  offset  Poln  Notes
------------------------------------------------------------------------------







  Dr. Lance A. M. Benner             |   PHONE:  (818) 354-7412
  Mail Stop 183-601                  |   FAX:    (818) 393-4445
  Jet Propulsion Laboratory          |   email:  lance.benner@jpl.nasa.gov
  California Institute of Technology |   Plan:   To live long and prosper
  Pasadena, CA 91109-8099            

http://echo.jpl.nasa.gov/asteroids/1999HF1/1999HF1.2022.planning.html





Asteroid Radar Astronomy




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