"Pseudo-MPEC" for 2006-047B = NORAD 29511 = STEREO-B

Created 2016 Jun 13 15:24:57 UT using Find_Orb

The observations were good enough to find orbital elements for the lunar flyby that put STEREO-B into heliocentric orbit, and for the heliocentric orbit itself. I can't extrapolate backwards to the previous lunar flyby on 2006 December 15 with any accuracy, much less to the previous five orbits around the earth.

This orbit has the object gradually receding from us, then coming back and passing us in July 2023, getting slightly brighter than magnitude 22. The Wikipedia page for STEREO confirms the 2023 flyby, and the 'where is STEREO' page shows that the orbit given below is still valid to quite good accuracy.

Astrometry:
STEREO-B      C2007 02 09.22439 08 56 44.19 +30 42 00.2          17.5 V D0081703
STEREO-B      C2007 02 09.23087 08 56 43.62 +30 41 33.6          17.7 V D0081703
STEREO-B      C2007 02 09.23796 08 56 43.04 +30 41 03.6          17.6 V D0081703
STEREO-B      C2007 02 09.24446 08 56 42.39 +30 40 35.1          17.6 V D0081703
STEREO-B      C2007 02 09.30464 08 56 35.59 +30 35 33.3          17.7 V D0081703
STEREO-B      C2007 02 09.30517 08 56 35.52 +30 35 30.3          17.8 V D0081703
STEREO-B      C2007 02 09.30571 08 56 35.48 +30 35 27.3          17.6 V D0081703
STEREO-B      C2007 02 09.30624 08 56 35.41 +30 35 24.5          17.6 V D0081703
STEREO-B      C2007 02 09.36260 08 56 29.65 +30 29 37.5          17.7 V D0081703
STEREO-B      C2007 02 09.36315 08 56 29.61 +30 29 33.3          17.6 V D0081703
STEREO-B      C2007 02 09.36369 08 56 29.58 +30 29 29.8          17.6 V D0081703
STEREO-B      C2007 02 09.43413 08 56 28.47 +30 20 59.9          17.2 V D0081703
STEREO-B      C2007 02 09.43466 08 56 28.52 +30 20 55.2          17.5 V D0081703
STEREO-B      C2007 02 09.43575 08 56 28.55 +30 20 47.1          17.3 V D0081703
STEREO-B      C2007 02 09.49800 08 56 36.99 +30 12 26.2          15.3 V D0081703
STEREO-B      C2007 02 09.49910 08 56 37.24 +30 12 18.1          17.4 V D0081703
STEREO-B      C2007 02 10.22897 09 02 25.05 +29 14 06.6          17.8 V      703
STEREO-B      C2007 02 10.22950 09 02 25.00 +29 14 04.6          17.8 V      703
STEREO-B      C2007 02 10.23002 09 02 24.95 +29 14 02.1          17.8 V      703
STEREO-B      C2007 02 10.23056 09 02 24.90 +29 14 00.2          17.7 V      703
STEREO-B      C2007 02 16.25402 09 27 05.50 +21 58 55.3          17.6 V D0087703
STEREO-B      C2007 02 16.26102 09 27 04.46 +21 58 32.7          17.6 V D0087703
STEREO-B      C2007 02 16.26806 09 27 03.34 +21 58 09.8          17.6 V D0087703
STEREO-B      C2007 02 16.27509 09 27 02.26 +21 57 45.4          17.7 V D0087703
STEREO-B      C2007 02 16.30694 09 26 57.15 +21 55 48.8          17.3 V D0087703
STEREO-B      C2007 02 16.30730 09 26 57.12 +21 55 48.1          17.4 V D0087703
STEREO-B      C2007 02 16.30765 09 26 57.07 +21 55 46.1          17.5 V D0087703
STEREO-B      C2007 02 16.30799 09 26 57.03 +21 55 45.1          17.5 V D0087703
STEREO-B      C2007 02 16.35133 09 26 50.56 +21 52 49.4          17.6 V D0087703
STEREO-B      C2007 02 16.35854 09 26 49.63 +21 52 18.5          17.6 V D0087703
STEREO-B      C2007 02 16.36576 09 26 48.66 +21 51 46.5          17.6 V D0087703
STEREO-B      C2007 02 16.37296 09 26 47.79 +21 51 14.3          17.7 V D0087703
STEREO-B      C2007 02 27.13784 09 54 26.31 +13 07 28.8          18.8 V D0089691
STEREO-B      C2007 02 27.14798 09 54 25.99 +13 07 12.0          19.0 V D0089691
STEREO-B      C2007 02 27.15812 09 54 25.56 +13 06 54.8          18.9 V D0089691
STEREO-B      C2007 02 27.18290 09 54 24.05 +13 06 11.0          18.7 V D0089291
STEREO-B      C2007 02 27.18689 09 54 23.75 +13 06 03.8          18.8 V D0089291
STEREO-B      C2007 02 27.19066 09 54 23.45 +13 05 56.8          18.7 V D0089291
STEREO-B      C2007 02 27.40152 09 54 00.90 +12 57 42.2                 D0089291
STEREO-B      C2007 02 27.40550 09 54 00.64 +12 57 30.7                 D0089291
STEREO-B      C2007 02 27.40934 09 54 00.44 +12 57 19.8                 D0089291

Station data:
(291) LPL/Spacewatch II (N31.9617 W111.5991)  US/Arizona.  1.8-m f/2.7
    reflector + CCD.
(691) Steward Observatory, Kitt Peak-Spacewatch (N31.9581 W111.5990)  US/Arizona.
     0.91-m Spacewatch telescope.
(703) Catalina Sky Survey (N32.41712 W110.73264)  US/Arizona.   Observer A. R.
    Gibbs.  Measurer E. J. Christensen.  0.68-m Schmidt + CCD.

Orbital elements:  2006-047B = NORAD 29511 = STEREO-B
   Perilune 2007 Jan 21.380240 +/- 0.00563 TT =  9:07:32 (JD 2454121.880240)
Epoch 2007 Jan 21.4 TT = JDT 2454121.9                        Find_Orb
q  8785.59595 +/- 416
H   27.2  G 0.15                    Peri.  311.23525 +/- 1.5
                                    Node   166.69944 +/- 2.2
e   1.8671737 +/- 0.0397            Incl.  104.53318 +/- 0.6
From 41 observations 2007 Feb. 9-27; mean residual 0".380 
Orbital elements:  2006-047B = NORAD 29511 = STEREO-B
   Perihelion 2007 Jan 14.150755 +/- 0.00206 TT =  3:37:05 (JD 2454114.650755)
Epoch 2007 Feb 27.0 TT = JDT 2454158.5   Earth MOID: 0.0075   Find_Orb
M  40.90620 +/- 0.0015
n   0.93288287 +/- 8.32e-6          Peri.  134.54617 +/- 0.0021
a   1.03733246 +/- 6.17e-6          Node   338.76591 +/- 0.00008
e   0.0452069 +/- 5.99e-6           Incl.    0.31549 +/- 0.000051
P   1.06/385.89d           H 27.2   G  0.15   U  4.9
q 0.99043786 +/- 3.76e-7    Q 1.08422706 +/- 1.27e-5
From 41 observations 2007 Feb. 9-27; mean residual 0".380

Residuals in arcseconds: 
070209 703 .468+ .172+    070209 703 .713- .850-    070216 703 .179- .471-
070209 703 .311- .286+    070209 703 .639- .125+    070216 703 .383+ .169-
070209 703 .128+ .391+    070210 703 .085+ .417+    070216 703 .216- .390-
070209 703 .394- .308+    070210 703 .079+ .494+    070216 703 .145- .378-
070209 703 .155+ .068+    070210 703 .065+ .037+    070227 691 .277+ .124-
070209 703 .065+ .036+    070210 703 .080+ .263+    070227 691 .041+ .015-
070209 703 .377+ .066+    070216 703 .172+ .104+    070227 691 6.8m+ .032+
070209 703 .285+ .246+    070216 703 .223+ .242+    070227 291 .201+ 3.6m-
070209 703 .130+ .431+    070216 703 .427- .759+    070227 291 .244+ .062+
070209 703 .148+ .096-    070216 703 .279- .297+    070227 291 .240+ .012-
070209 703 .281+ .016+    070216 703 1.18- .860-    070227 291 .466+ .197+
070209 703 .406+ .307+    070216 703 .800- .190-    070227 291 .206+ .021-
070209 703 .675+ .297-    070216 703 .726- .856-    070227 291 .466+ .017+
070209 703 .260+ .038+    070216 703 .535- .559-

Ephemerides (geocentric):
Date (UTC)   RA              Dec         delta   r     elong  mag " sig PA
---- -- --  ------------   ------------  ------ ------ -----  --- ---- ---
2007 02 27  09 53 37.342   +13 17 20.36  .01292 1.0028 168.1 18.5  0.2 123
2007 02 28  09 55 39.162   +12 39 13.83  .01325 1.0034 167.8 18.6  0.1 113
2007 03 01  09 57 37.673   +12 02 36.20  .01358 1.0039 167.4 18.6  0.0  55
2007 03 02  09 59 32.956   +11 27 24.61  .01392 1.0045 167.0 18.7  0.1 160
2007 03 03  10 01 25.081   +10 53 36.46  .01425 1.0050 166.6 18.8  0.2 149
2007 03 04  10 03 14.121   +10 21 09.31  .01460 1.0056 166.2 18.8  0.4 145
2007 03 05  10 05 00.158   +09 50 00.83  .01494 1.0061 165.8 18.9  0.5 143
2007 03 06  10 06 43.288   +09 20 08.75  .01530 1.0067 165.3 19.0  0.7 142
2007 03 07  10 08 23.628   +08 51 30.82  .01565 1.0073 164.8 19.0  0.8 142
2007 03 08  10 10 01.313   +08 24 04.74  .01602 1.0078 164.3 19.1  1.0 141
2007 03 09  10 11 36.502   +07 57 48.19  .01638 1.0084 163.8 19.2  1.1 141
2007 03 10  10 13 09.374   +07 32 38.78  .01676 1.0090 163.3 19.2  1.3 141
2007 03 11  10 14 40.130   +07 08 34.00  .01714 1.0096 162.7 19.3  1.4 141
2007 03 12  10 16 08.992   +06 45 31.26  .01753 1.0102 162.2 19.4  1.6 141
2007 03 13  10 17 36.206   +06 23 27.82  .01793 1.0108 161.6 19.4  1.7 141
2007 03 14  10 19 02.042   +06 02 20.77  .01833 1.0114 161.0 19.5  1.9 141
2007 03 15  10 20 26.800   +05 42 06.96  .01874 1.0120 160.5 19.6  2.0 141
2007 03 16  10 21 50.807   +05 22 42.99  .01917 1.0126 159.9 19.6  2.2 141
2007 03 17  10 23 14.418   +05 04 05.19  .01960 1.0132 159.3 19.7  2.4 141
2007 03 18  10 24 38.002   +04 46 09.64  .02004 1.0139 158.7 19.8  2.5 141
2007 03 19  10 26 01.926   +04 28 52.29  .02050 1.0145 158.1 19.8  2.7 141
2007 03 20  10 27 26.530   +04 12 09.11  .02096 1.0151 157.6 19.9  2.8 141
2007 03 21  10 28 52.098   +03 55 56.29  .02143 1.0157 157.0 20.0  3.0 141
2007 03 22  10 30 18.843   +03 40 10.50  .02192 1.0164 156.4 20.0  3.1 140
2007 03 23  10 31 46.893   +03 24 48.95  .02241 1.0170 155.9 20.1  3.3 140
2007 03 24  10 33 16.295   +03 09 49.45  .02292 1.0177 155.3 20.2  3.4 140
2007 03 25  10 34 47.035   +02 55 10.39  .02343 1.0183 154.8 20.2  3.6 140
2007 03 26  10 36 19.048   +02 40 50.61  .02395 1.0190 154.2 20.3  3.7 139
2007 03 27  10 37 52.240   +02 26 49.32  .02449 1.0196 153.7 20.4  3.9 139
2007 03 28  10 39 26.502   +02 13 05.97  .02503 1.0203 153.1 20.4  4.1 138
2007 03 29  10 41 01.716   +01 59 40.18  .02558 1.0210 152.6 20.5  4.2 138
2007 03 30  10 42 37.769   +01 46 31.68  .02614 1.0217 152.1 20.6  4.4 138
2007 03 31  10 44 14.550   +01 33 40.28  .02671 1.0223 151.5 20.6  4.5 137
2007 04 01  10 45 51.962   +01 21 05.77  .02728 1.0230 151.0 20.7  4.7 137
2007 04 02  10 47 29.917   +01 08 47.98  .02787 1.0237 150.5 20.8  4.9 137
2007 04 03  10 49 08.344   +00 56 46.66  .02847 1.0244 150.0 20.8  5.0 136
2007 04 04  10 50 47.185   +00 45 01.52  .02907 1.0251 149.5 20.9  5.1 136
2007 04 05  10 52 26.401   +00 33 32.21  .02969 1.0257 148.9 20.9  5.3 136
2007 04 06  10 54 05.969   +00 22 18.26  .03031 1.0264 148.4 21.0  5.4 135
2007 04 07  10 55 45.884   +00 11 19.11  .03095 1.0271 147.9 21.1  5.6 135
2007 04 08  10 57 26.157   +00 00 34.11  .03160 1.0278 147.4 21.1  5.7 135
2007 04 09  10 59 06.817   -00 09 57.55  .03226 1.0285 146.9 21.2  5.8 134
2007 04 10  11 00 47.912   -00 20 16.78  .03293 1.0292 146.4 21.2  5.9 134
2007 04 11  11 02 29.504   -00 30 24.63  .03361 1.0299 145.8 21.3  6.0 134
2007 04 12  11 04 11.678   -00 40 22.32  .03431 1.0306 145.3 21.4  6.1 133
2007 04 13  11 05 54.533   -00 50 11.20  .03502 1.0314 144.8 21.4  6.2 133
2007 04 14  11 07 38.190   -00 59 52.83  .03574 1.0321 144.3 21.5  6.3 133
2007 04 15  11 09 22.779   -01 09 28.89  .03648 1.0328 143.8 21.5  6.4 133
2007 04 16  11 11 08.440   -01 19 01.17  .03723 1.0335 143.3 21.6  6.5 132
2007 04 17  11 12 55.306   -01 28 31.49  .03799 1.0342 142.8 21.7  6.6 132
2007 04 18  11 14 43.492   -01 38 01.55  .03876 1.0349 142.3 21.7  6.7 132
2007 04 19  11 16 33.078   -01 47 32.82  .03955 1.0356 141.9 21.8  6.8 131
2007 04 20  11 18 24.106   -01 57 06.45  .04036 1.0363 141.4 21.8  6.9 131
2007 04 21  11 20 16.577   -02 06 43.22  .04117 1.0371 140.9 21.9  7.0 131
2007 04 22  11 22 10.455   -02 16 23.55  .04200 1.0378 140.4 21.9  7.0 130
2007 04 23  11 24 05.677   -02 26 07.60  .04284 1.0385 140.0 22.0  7.1 130
2007 04 24  11 26 02.164   -02 35 55.29  .04369 1.0392 139.5 22.1  7.2 130
2007 04 25  11 27 59.828   -02 45 46.39  .04456 1.0399 139.1 22.1  7.3 129
2007 04 26  11 29 58.578   -02 55 40.59  .04543 1.0406 138.6 22.2  7.4 129
2007 04 27  11 31 58.324   -03 05 37.54  .04632 1.0413 138.2 22.2  7.5 129