2008 QS11 Goldstone Radar Observations Planning


Background

2008 QS11 was discovered at Siding Spring (Australia) on August 27, 2008.
It will approach within 0.028 AU (10.9 lunar distances) on October 2 when it
will be a very strong radar target at Goldstone.  

The absolute magnitude of 19.8 suggests a diameter within a factor of two of 350 m.
Otherwise its physical properties are unknown.

Goldstone observations are scheduled on September 30 and October 1-3.
Arecibo observations are scheduled on October 3 and 4.

This object will brighten to about 14th magnitude in late September and early October
when it will be a potential target for photometric and spectroscopic observations.

Due to its size and the proximity of its orbit to Earth's, this object has been 
classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center.

Orbital and Physical Characteristics
 orbit type               Apollo
 semimajor axis           1.864 AU     
 eccentricity             0.483        
 inclination             12.5°       
 perihelion distance      0.964 AU     
 aphelion distance        2.764 AU     
 absolute magnitude (H)  19.8
 diameter                 roughly 550 meters 
 rotation period          roughly two days
 pole direction           unknown
 lightcurve amplitude     unknown
 spectral class           C (M. D. Hicks, pers. comm.)

Last update: 2008 October 01

Discovery

M.P.E.C. 2008-Q46                                Issued 2008 Aug. 28, 13:37 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
   on behalf of Commission 20 of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
          URL http://www.cfa.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                   2008 QS11

Observations:
     K08Q11S* C2008 08 27.63741 00 24 24.30 -41 48 58.8          18.3 V EQ046E12
     K08Q11S  C2008 08 27.65057 00 24 25.38 -41 49 03.6          18.3 V EQ046E12
     K08Q11S  C2008 08 27.66378 00 24 26.46 -41 49 09.1          18.2 V EQ046E12
     K08Q11S  C2008 08 27.67694 00 24 27.46 -41 49 13.6          18.4 V EQ046E12
     K08Q11S  C2008 08 27.72243 00 24 31.21 -41 49 30.6          17.9 V EQ046E12
     K08Q11S  C2008 08 27.72330 00 24 31.24 -41 49 30.7          18.5 V EQ046E12
     K08Q11S  C2008 08 27.73161 00 24 31.91 -41 49 34.5          18.2 V EQ046E12
     K08Q11S  C2008 08 27.73215 00 24 31.93 -41 49 34.0          18.3 V EQ046E12
     K08Q11S  C2008 08 27.74882 00 24 33.33 -41 49 39.2          18.1 V EQ046E12
     K08Q11S  C2008 08 27.76542 00 24 34.74 -41 49 44.5          18.4 V EQ046E12
     K08Q11S  C2008 08 27.78201 00 24 36.14 -41 49 49.4          18.2 V EQ046E12
     K08Q11S  C2008 08 27.79854 00 24 37.58 -41 49 54.6          18.1 V EQ046E12
     K08Q11S  C2008 08 28.45862 00 25 47.10 -41 53 52.1          18.2 R EQ046474
     K08Q11S  C2008 08 28.46152 00 25 47.37 -41 53 53.6          18.2 R EQ046474
     K08Q11S  C2008 08 28.46429 00 25 47.63 -41 53 54.8          18.1 R EQ046474

Observer details:
474 Mount John Observatory, Lake Tekapo.  Observer A. C. Gilmore.  Measurer
    P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
E12 Siding Spring Survey.  Observer G. J. Garradd.  Measurers E. C. Beshore,
    A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
    R. A. Kowalski, S. M. Larson, R. H. McNaught.  0.5-m Uppsala Schmidt + CCD.

Orbital elements:
2008 QS11                                           PHA, Earth MOID = 0.0139 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5                 MPC
M  13.59154              (2000.0)            P               Q
n   0.40871017     Peri.   25.78188     +0.76404669     -0.64315100
a   1.7982873      Node    14.59598     +0.55147675     +0.61013053
e   0.4526552      Incl.   11.64984     +0.33482241     +0.46270675
P   2.41           H   19.7           G   0.15           U   9
Residuals in seconds of arc
080827 E12  0.0   0.4-    080827 E12  0.1-  0.2+    080827 E12  0.1+  0.2+
080827 E12  0.2+  0.2+    080827 E12  0.2-  0.8-    080827 E12  0.3+  0.2-
080827 E12  0.3+  0.0     080827 E12  0.5-  0.1-    080828 474  0.1-  0.1+
080827 E12  0.3-  0.6+    080827 E12  0.2-  0.2+    080828 474  0.0   0.1-
080827 E12  0.4+  0.0     080827 E12  0.1+  0.1+    080828 474  0.1+  0.0

Ephemeris:
2008 QS11                a,e,i = 1.80, 0.45, 12                  q = 0.9843
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2008 08 22    00 15.40   -41 06.1    0.274    1.232   139.1    32.5    18.7
2008 09 01    00 31.81   -42 11.9    0.208    1.173   138.3    34.9    18.1
2008 09 11    00 52.66   -42 00.3    0.147    1.119   137.0    37.9    17.3
2008 09 21    01 28.27   -38 09.4    0.0894   1.071   136.7    40.0    16.2
2008 10 01    02 57.58   -15 56.2    0.0402   1.032   138.7    39.8    14.4
2008 10 11    07 05.94   +49 50.7    0.0439   1.003    95.4    82.1    15.8
2008 10 21    09 52.94   +56 46.3    0.0923   0.987    82.4    92.3    17.8
2008 10 31    10 48.46   +55 34.6    0.143    0.985    82.8    88.9    18.6
2008 11 10    11 14.19   +54 21.7    0.192    0.996    86.3    82.7    19.0
.
.
.

Timothy B. Spahr             (C) Copyright 2008 MPC           M.P.E.C. 2008-Q46

SNR Calculation

Target Name:    2008 QS11
HMag:           19.8
Diameter:       0.6 km  (an educated guess assuming H = 19.8 and a C-class optical albedo)
Period:         2.2 h        (a standard guess)

Goldstone:  
                             LST                            #           max
 start date    window       window      RA, dec   dist    runs   SNR  SNR/run
-----------------------------------------------------------------------------
2008 Sep 28  07:20-13:50  00:02-06:33   48, -18  0.036    256    440     30
2008 Sep 29  07:09-14:41  23:55-07:28   54, -11  0.032    323    770     47
2008 Sep 30  07:01-15:36  23:51-08:27   61,  -2  0.030    394   1200     67
2008 Oct 01  06:57-16:34  23:51-09:30   69,   8  0.028    460   1600     82
2008 Oct 02  06:58-17:34  23:56-10:34   77,  18  0.028    509   1800     84
2008 Oct 03  07:05-18:33  00:07-11:37   86,  28  0.029    531   1500     72
2008 Oct 04  07:16-19:27  00:22-12:35   96,  35  0.032    529   1100     53
2008 Oct 05  07:31-20:16  00:41-13:28  105,  41  0.035    509    750     36
2008 Oct 06  07:47-20:57  01:01-14:13  113,  45  0.040    479    490     24

Arecibo:  (assumes Ptx = 700 kW)
                             LST                            #           max
 start date    window       window      RA, dec   dist    runs   SNR  SNR/run
-----------------------------------------------------------------------------
2008 Oct 01  07:13-09:21  03:28-05:36   67,   6  0.028    102  15000   1600
2008 Oct 02  07:22-10:09  03:41-06:28   76,  17  0.028    134  19000   1700
2008 Oct 03  07:57-10:37  04:20-07:00   85,  26  0.029    124  16000   1500
2008 Oct 04  08:58-10:42  05:25-07:09   95,  34  0.031     76   8000   1000

The SNR estimates above do NOT take into account the slow rotation of the asteroid
or the reduced transmitter power at Goldstone (~200 kW).


Track Assignments


2008 QS11 Goldstone Schedule

      UT        UT       PDT                 Duration  Round-trip
DOY  Date    TX Window   TX Window           hh:mm     time (sec)   SNR/Run 
---  ----    ---------   ---------           -------   ---------    -------
(274  Sep 30  0705-1230   0005-0530 Sep 30     5:25      29            67)  CANCELLED DUE TO KLYSTRON PROBLEMS
275  Oct 01  0800-1100   0100-0400 Oct 01     3:00      28            82 
276  Oct 02  0700-1115   0000-0415 Oct 02     4:15      28            84 
277  Oct 03  0705-1430   0005-0730 Oct 03     7:25      29            73 

Arecibo Schedule
277  Oct 03  0758-1037   0058-0337 Oct  3     2:39      29          1500 
278  Oct 04  0858-1042   0158-0342 Oct  4     2:44      31          1000


Uncertainties

From Horizons, 2008 August 29: JPL solution 2, #obs = 18 (1 day)

 Date__(UT)__HR:MN     R.A._(J2000.0)_DEC.            delta POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
 2008-Sep-28 00:00 *m   43.28400 -22.10212 .041191518635367 234367.319   58780.89  210241.08     63.298707
 2008-Sep-29 00:00 *m   47.90317 -16.94782 .036890433448749 310579.171   54284.31  194158.22     59.441789
 2008-Sep-30 00:00 *m   53.27067 -10.40910 .033233157956650 406575.172   47619.48  170320.17     52.605112
 2008-Oct-01 00:00 *m   59.47192  -2.35730 .030446911758727 514463.430   38141.98  136422.08     41.826026
 2008-Oct-02 00:00 *m   66.54429   6.98793 .028780032736659 611437.946   25680.44   91851.00     26.706748
 2008-Oct-03 00:00 *m   74.43365  16.88348 .028424458026678 665632.542   11171.53   39957.11      8.292940
 2008-Oct-04 00:00 *m   82.95537  26.23789 .029422349784206 659751.236    4302.99   15390.46     11.488133
 2008-Oct-05 00:00 *m   91.79056  34.13906 .031640841806492 605924.172   17157.76   61368.00     29.495322

- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Horizons, JPL solution 4, (5 days)

 2008-Sep-28 00:00 *m   46.74264 -19.47843 .036964641276537   8438.59183   3744.69   13393.60     2.918977
 2008-Sep-29 00:00 *m   52.19921 -13.25517 .033007523011046  11337.1021    3097.09   11077.33     2.630300
 2008-Sep-30 00:00 *m   58.56524  -5.39040 .029884868031238  14796.7406    2221.34    7945.05     2.260027
 2008-Oct-01 00:00 *m   65.89820   4.02244 .027872768962097  18179.3219    1131.18    4045.89     1.803644
 2008-Oct-02 00:00 *m   74.15147  14.29266 .027212987044773  20363.2538     490.86    1755.65     1.320097
 2008-Oct-03 00:00 *m   83.12155  24.20867 .027995894931131  20526.8063    1568.05    5608.43     0.978063
 2008-Oct-04 00:00 *m   92.43876  32.64479 .030104166818748  18926.2487    2617.17    9360.82     0.965728
 2008-Oct-05 00:00 *m  101.63818  39.10754 .033282326599537  16498.1744    3424.03   12246.69     1.185987

- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Horizons, 2008 Sep. 18: JPL solution 10, #obs = 50 (18 days)

 2008-Sep-28 00:00 *m   46.06966 -20.08794 .038123529511706    134.496348   251.34     898.97     0.109102
 2008-Sep-29 00:00 *m   51.35263 -14.10583 .034055630783328    184.801644   211.23     755.49     0.098567
 2008-Sep-30 00:00 *m   57.51145  -6.53226 .030786317908475    247.220193   156.44     559.55     0.088199
 2008-Oct-01 00:00 *m   64.61143   2.60106 .028585105435296    312.659912    85.85     307.04     0.078259
 2008-Oct-02 00:00 *m   72.62694  12.71537 .027702021449066    362.087059    10.44      37.32     0.069740
 2008-Oct-03 00:00 *m   81.38904  22.68414 .028255418444607    377.687213    81.09     290.05     0.064353
 2008-Oct-04 00:00 *m   90.56662  31.35373 .030161222290278    358.943791   153.33     548.41     0.063357
 2008-Oct-05 00:00 *m   99.71930  38.12489 .033182531046129    320.512486   209.56     749.54     0.066493

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
From Jon Giorgini, 2008 Sep. 29:

With 117 reported measurements (2008-Aug-27 to 2008-Sep-28),
2008 QS11 solution #18 was computed. Formal 3-sigma X-band
uncertainties are shown below.

Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
2008-Sep-30 00:00   3.72086919     155.67      0.017968
2008-Oct-01 00:00   5.48134051      87.39      0.016697
2008-Oct-02 00:00   7.26192392       8.34      0.016165
2008-Oct-03 00:00   8.51717369      73.31      0.016443
2008-Oct-04 00:00   8.96674819     143.89      0.017492
2008-Oct-05 00:00   8.75872391     198.91      0.019186
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini, 2008 Oct. 1:

With 152 optical measurements ( 2008-Aug-27 to 2008-Sep-29),
1 delay and 1 Doppler from Goldstone, 2008 QS11 solution #24
formal 3-sigma S/X-band uncertainties are tabulated below:

 Date__(UT)__HR:MN   POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
 2008-Sep-30 00:00   .781091717       1.94       6.95      0.000053
 2008-Oct-01 00:00   1.39235504       1.40       5.01      0.000031
 2008-Oct-02 00:00   2.18819873       0.75       2.67      0.000034
 2008-Oct-03 00:00   2.89586846       0.25       0.89      0.000084
 2008-Oct-04 00:00   3.32021348       0.71       2.55      0.000182
 2008-Oct-05 00:00   3.45078187       1.23       4.39      0.000304

- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini, 2008 Oct. 2:

Solution #26 3-sigma uncertainties (w/152 opt. 
2008-Aug-27 to 2008-Sep-29, 2 delay, 2 Doppler) are:

 Date__(UT)__HR:MN   POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
 2008-Sep-30 00:00   .594070254       0.63       2.25      0.000031
 2008-Oct-01 00:00   .676716579       0.51       1.81      0.000012
 2008-Oct-02 00:00   .798333406       0.36       1.28      0.000006
 2008-Oct-03 00:00   .938065630       0.24       0.84      0.000008
 2008-Oct-04 00:00   1.04896639       0.22       0.80      0.000024
 2008-Oct-05 00:00   1.10698462       0.30       1.09      0.000049


Setups




CW setup for the third track:

Initial CW setup
----------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:           2
Dwell                    10 seconds      <-- NOTE THE SHORT DWELL TIME
Bandwidth:               4000 Hz  
Sampling interval:       2500 x 0.1 usec 
VME FFT for PSD files:  16384 for 0.244 Hz resolution 



Possible ranging setups:
---------------------------------------------------------------------------
127 x 64 10-usec single sample
baud             10 usec
code            127
gates           127
PRP            1270 usec
FFT              64   
CLT       VME     ?
          PFS     ?
ncoh              1
bandwidth       787.4 Hz   
resolution       12.3 Hz
TXOFF          +100 Hz -> echo will be centered at +8 bins or in bin 32 + 8 = 40
---------------------------------------------------------------------------
127 x 64 11-usec single sample
baud             11 usec
code            127
gates           127
PRP            1397 usec
FFT              64  
CLT       VME     ?
          PFS     ?
ncoh              1
bandwidth       715.8 Hz   
resolution       11.2 Hz
TXOFF          +100 Hz --> echo will be centered at +9 bins or in bin 32 + 9 = 41
-------------------------------------------------------------------------
127 x 64 7-usec single sample
baud              7 usec
code            127
gates           127
PRP             889
FFT              64
CLT        VME    ?
           PFS    ?
ncoh              1
bandwidth      1124.9 Hz   
resolution       17.6 Hz
TXOFF           +60 -> echo would be centered at +3.4 bins w/perfect ephemeris
-------------------------------------------------------------------------
127 x 64 1-usec single sample
baud            1 usec
code            127
gates           127
PRP             127
FFT             64
CLT             4
ncoh            15
bandwidth       525 Hz   
resolution      8.2 Hz
TXOFF           +100 -> echo would be centered at +12.2 bins  or in bin 32 + 12.2 = 44
-------------------------------------------------------------------------------
0.125-usec ranging 
setup           JX1XS001 revised 
baud              0.125 usec
code            127
gates           127
FFT              64
ncoh            984
bandwidth        64.016384 Hz     
resolution       1.000256 Hz
TXOFF          +15 Hz to put echo at 32 + 15 = bin 47
PFS CLT gate    ?
VME CLT gate    ?

_____________________________________________________________________
POSSIBLE RANGING SETUPS: (code=127, FFT=64, single-pol'n) 
   These are from JX, w/ max-band (min-acc) options from Ray Jurgens.
   Currently configured for 5-sec records.
_______________________________________________________________________
 Setup        Baud        RP         1-acc 1-acc      
            usec   m      usec        band   res    acc  band     res 
_______________________________________________________________________
 
JX1XS110  11.000 1650    1397.0      715.8  11.2      2   358     5.6
JX1XS070   7.000 1050     889.0     1124.9  17.6      3   375     5.9
                                                      
JX1XS020   2.000  300     254.0     3937.0  61.5     12   328     5.1
                                                      4   984    15.4 

JX1XS010   1.000  150     127.0     7874.0 123.0     41   192     3.0 
                                                      8   984    15.4 

JX1XS005   0.500   75      63.5    15748.0 246.1    123   128     2.0 
                                                     15  1050    16.4 

JX1XS002   0.250   37.5    31.75   31496.1 492.1    492    64     1.0
                                                     30  1050    16.4 
 
JX1XS001   0.125   18.75   15.875  62992.1 984.3   1970    32     0.5 
                                                     60  1050    16.4 
____________________________________________________________________


Instructions

NOTE: Data should be moved to the appropriate subdirectories in aardvark:/export/data0/2008QS11/raw/

2008 QS11 POINTING:

   OSOD and predicts are at Goldstone on aardvark:

/export/data3/osod/ops/2008qs11/PRDX.OUT.s28
                               /PUNCH.OUT.s28
                               /EPH.OUT.s28

POINTING  
                                                  TX Offsets    
Date (UTC)   DOY  hhmmss    RA       Dec   Macro  LHA      Dec    RTT    OSOD
2008 10 01   275  080000  67.3482  5.9314  A                      28.0     18
2008 10 01   275  090000  67.6653  6.3532  A                      28.0
2008 10 01   275  100000  67.9808  6.7760  A      -2.5     3.3    27.9
2008 10 01   275  110000  68.2959  7.1994  A                      27.9
2008 10 01   275  120000  68.6116  7.6233  A                      27.9

2008 10 02   276  070000  75.3088 15.7196  A                      27.6     24
2008 10 02   276  080000  75.6633 16.1474  A                      27.6
2008 10 02   276  090000  76.0146 16.5738  A                      27.6
2008 10 02   276  100000  76.3635 16.9983  A      -2.7     3.3    27.7
2008 10 02   276  110000  76.7108 17.4206  A                      27.7
2008 10 02   276  120000  77.0577 17.8403  A                      27.7
2008 10 02   276  130000  77.4054 18.2572  A                      27.7

Closest approach occurs shortly before the second track starts.

2008 10 03   277  070000  84.2551 25.4119   A                     28.6     26
2008 10 03   277  080000  84.6326 25.7949   A                     28.7
2008 10 03   277  090000  85.0058 26.1745   A     -3.0   3.0      28.7
2008 10 03   277  100000  85.3755 26.5501   A                     28.8
2008 10 03   277  110000  85.7423 26.9214   AB                    28.9
2008 10 03   277  120000  86.1073 27.2879    B                    28.9
2008 10 03   277  130000  86.4717 27.6493    B    -2.9   2.9      29.0
2008 10 03   277  140000  86.8369 28.0056    B                    29.1
2008 10 03   277  150000  87.2039 28.3567    B                    29.2

This will also work fine for solution 28.

Offsets are in millidegrees.


PRDX.OUT.s18 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2008 OCT 01 08:00 28.0404715086 128171.177 306.1883 5.9314 67.348 32.578 2008 OCT 01 08:10 28.0315403029 126660.593 308.6422 6.0016 67.401 34.518 2008 OCT 01 08:20 28.0227160683 125119.167 311.0961 6.0719 67.454 36.437 2008 OCT 01 08:30 28.0140009260 123547.986 313.5501 6.1422 67.507 38.333 2008 OCT 01 08:40 28.0053969251 121948.192 316.0041 6.2125 67.560 40.203 2008 OCT 01 08:50 27.9969060269 120320.976 318.4582 6.2829 67.613 42.042 2008 OCT 01 09:00 27.9885301076 118667.579 320.9124 6.3532 67.665 43.848 2008 OCT 01 09:10 27.9802709662 116989.290 323.3665 6.4236 67.718 45.614 2008 OCT 01 09:20 27.9721302923 115287.441 325.8207 6.4941 67.771 47.338 2008 OCT 01 09:30 27.9641096956 113563.407 328.2750 6.5645 67.823 49.011 2008 OCT 01 09:40 27.9562106756 111818.603 330.7292 6.6350 67.876 50.627 2008 OCT 01 09:50 27.9484346380 110054.479 333.1835 6.7055 67.928 52.180 2008 OCT 01 10:00 27.9407828909 108272.521 335.6379 6.7760 67.981 53.660 2008 OCT 01 10:10 27.9332566316 106474.246 338.0922 6.8465 68.033 55.058 2008 OCT 01 10:20 27.9258569409 104661.198 340.5465 6.9171 68.086 56.363 2008 OCT 01 10:30 27.9185848084 102834.949 343.0009 6.9876 68.138 57.564 2008 OCT 01 10:40 27.9114410947 100997.093 345.4552 7.0582 68.191 58.649 2008 OCT 01 10:50 27.9044265692 99149.243 347.9095 7.1288 68.243 59.606 2008 OCT 01 11:00 27.8975418662 97293.029 350.3639 7.1994 68.296 60.421 PRDX.OUT.s24 2008 OCT 02 07:00 27.6356283309 -5621.990 284.1723 15.7196 75.309 20.432 2008 OCT 02 07:10 27.6360657238 -6864.081 286.6198 15.7910 75.368 22.458 2008 OCT 02 07:20 27.6365914088 -8141.363 289.0675 15.8624 75.427 24.488 2008 OCT 02 07:30 27.6372078415 -9453.293 291.5152 15.9337 75.486 26.519 2008 OCT 02 07:40 27.6379174299 -10799.266 293.9630 16.0050 75.546 28.551 2008 OCT 02 07:50 27.6387225373 -12178.613 296.4109 16.0762 75.604 30.584 2008 OCT 02 08:00 27.6396254781 -13590.604 298.8589 16.1474 75.663 32.615 2008 OCT 02 08:10 27.6406285058 -15034.451 301.3070 16.2186 75.722 34.644 2008 OCT 02 08:20 27.6417338389 -16509.304 303.7552 16.2897 75.781 36.669 2008 OCT 02 08:30 27.6429436047 -18014.257 306.2034 16.3608 75.839 38.689 2008 OCT 02 08:40 27.6442598799 -19548.350 308.6518 16.4319 75.898 40.703 2008 OCT 02 08:50 27.6456846795 -21110.567 311.1002 16.5028 75.956 42.708 2008 OCT 02 09:00 27.6472199377 -22699.844 313.5487 16.5738 76.015 44.704 2008 OCT 02 09:10 27.6488675051 -24315.063 315.9972 16.6447 76.073 46.686 2008 OCT 02 09:20 27.6506291673 -25955.062 318.4458 16.7155 76.131 48.654 2008 OCT 02 09:30 27.6525066193 -27618.630 320.8945 16.7863 76.189 50.605 2008 OCT 02 09:40 27.6545014620 -29304.516 323.3432 16.8570 76.247 52.533 2008 OCT 02 09:50 27.6566152225 -31011.426 325.7920 16.9277 76.305 54.437 2008 OCT 02 10:00 27.6588493204 -32738.029 328.2409 16.9983 76.363 56.309 2008 OCT 02 10:10 27.6612050960 -34482.956 330.6897 17.0689 76.421 58.145 2008 OCT 02 10:20 27.6636837774 -36244.807 333.1387 17.1393 76.479 59.938 2008 OCT 02 10:30 27.6662865011 -38022.149 335.5876 17.2098 76.537 61.678 2008 OCT 02 10:40 27.6690143093 -39813.522 338.0366 17.2801 76.595 63.354 2008 OCT 02 10:50 27.6718681336 -41617.440 340.4856 17.3504 76.653 64.954 2008 OCT 02 11:00 27.6748487858 -43432.395 342.9346 17.4206 76.711 66.462 2008 OCT 02 11:10 27.6779570086 -45256.858 345.3836 17.4907 76.769 67.858 2008 OCT 02 11:20 27.6811933919 -47089.284 347.8327 17.5608 76.826 69.120 PRDX.OUT.s28 2008 OCT 03 07:00 28.6047873026 -144365.079 276.2117 25.4119 84.255 19.171 2008 OCT 03 07:10 28.6149419345 -145385.907 278.6553 25.4760 84.318 21.102 2008 OCT 03 07:20 28.6251692780 -146439.758 281.0991 25.5399 84.381 23.045 2008 OCT 03 07:30 28.6354716287 -147526.307 283.5429 25.6038 84.444 24.997 2008 OCT 03 07:40 28.6458512823 -148645.168 285.9869 25.6676 84.507 26.959 2008 OCT 03 07:50 28.6563104802 -149795.892 288.4310 25.7313 84.570 28.930 2008 OCT 03 08:00 28.6668514385 -150977.972 290.8753 25.7949 84.633 30.908 2008 OCT 03 08:10 28.6774763358 -152190.842 293.3196 25.8584 84.695 32.894 2008 OCT 03 08:20 28.6881873091 -153433.878 295.7641 25.9218 84.757 34.886 2008 OCT 03 08:30 28.6989864494 -154706.400 298.2087 25.9851 84.820 36.884 2008 OCT 03 08:40 28.7098757898 -156007.670 300.6534 26.0484 84.882 38.888 2008 OCT 03 08:50 28.7208573351 -157336.900 303.0982 26.1115 84.944 40.895 2008 OCT 03 09:00 28.7319329992 -158693.246 305.5431 26.1745 85.006 42.907 2008 OCT 03 09:10 28.7431046603 -160075.816 307.9881 26.2374 85.068 44.921 2008 OCT 03 09:20 28.7543741240 -161483.667 310.4332 26.3002 85.129 46.938 2008 OCT 03 09:30 28.7657431198 -162915.808 312.8784 26.3628 85.191 48.956 2008 OCT 03 09:40 28.7772133311 -164371.204 315.3237 26.4254 85.253 50.974 2008 OCT 03 09:50 28.7887863845 -165848.776 317.7690 26.4878 85.314 52.992 2008 OCT 03 10:00 28.8004637033 -167347.402 320.2145 26.5501 85.375 55.009 2008 OCT 03 10:10 28.8122467642 -168865.923 322.6601 26.6123 85.437 57.022 2008 OCT 03 10:20 28.8241369287 -170403.139 325.1057 26.6744 85.498 59.031 2008 OCT 03 10:30 28.8361354643 -171957.817 327.5514 26.7364 85.559 61.033 2008 OCT 03 10:40 28.8482435422 -173528.692 329.9971 26.7982 85.620 63.027 2008 OCT 03 10:50 28.8604622613 -175114.467 332.4429 26.8599 85.681 65.009 2008 OCT 03 11:00 28.8727926197 -176713.816 334.8888 26.9214 85.742 66.975 2008 OCT 03 11:10 28.8852355133 -178325.390 337.3347 26.9828 85.803 68.920 2008 OCT 03 11:20 28.8977917596 -179947.815 339.7807 27.0441 85.864 70.838 2008 OCT 03 11:30 28.9104620705 -181579.696 342.2267 27.1053 85.925 72.718 2008 OCT 03 11:40 28.9232470508 -183219.622 344.6727 27.1663 85.986 74.545 2008 OCT 03 11:50 28.9361472146 -184866.164 347.1187 27.2272 86.047 76.299 2008 OCT 03 12:00 28.9491629838 -186517.882 349.5648 27.2879 86.107 77.946 2008 OCT 03 12:10 28.9622946705 -188173.326 352.0109 27.3485 86.168 79.437 2008 OCT 03 12:20 28.9755424763 -189831.038 354.4570 27.4089 86.229 80.696 2008 OCT 03 12:30 28.9889065174 -191489.555 356.9031 27.4693 86.290 81.618 2008 OCT 03 12:40 29.0023867903 -193147.412 359.3492 27.5294 86.350 82.084 2008 OCT 03 12:50 29.0159832062 -194803.146 1.7953 27.5895 86.411 82.016 2008 OCT 03 13:00 29.0296955648 -196455.296 4.2414 27.6493 86.472 81.427 2008 OCT 03 13:10 29.0435235554 -198102.406 6.6875 27.7091 86.533 80.413 2008 OCT 03 13:20 29.0574667738 -199743.033 9.1336 27.7687 86.593 79.095 2008 OCT 03 13:30 29.0715247326 -201375.740 11.5796 27.8281 86.654 77.568 2008 OCT 03 13:40 29.0856968007 -202999.107 14.0256 27.8874 86.715 75.903 2008 OCT 03 13:50 29.0999823001 -204611.731 16.4715 27.9466 86.776 74.144 2008 OCT 03 14:00 29.1143804116 -206212.227 18.9174 28.0056 86.837 72.320 2008 OCT 03 14:10 29.1288902372 -207799.232 21.3632 28.0645 86.898 70.450 2008 OCT 03 14:20 29.1435108014 -209371.406 23.8090 28.1232 86.959 68.549 2008 OCT 03 14:30 29.1582409924 -210927.438 26.2547 28.1818 87.020 66.624

2008 QS11 GOLDSTONE MASTERLOG

============================================================================== Receive TX Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes ------------------------------------------------------------------------------ ============================================================================== Image from October 1: 0.125 usec (19 m) x 0.043 Hz Range increases down and Doppler frequency increases to the right. The bandwidth is about 1 Hz and the visible extent is roughly 280 meters. Given that the radar can illuminate only about 1/2 of the object, its true size is thus about 560 meters.
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 300-233 | FAX: (818) 354-9476 Jet Propulsion Laboratory | email: lance@reason.jpl.nasa.gov Pasadena, CA 91109-8099 | Plan: To live long and prosper http://echo.jpl.nasa.gov/asteroids/2008QS11/html/2008QS11_planning.html

Asteroid Radar Astronomy