3103 Eger (1982 BB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3541833241 ± 2.00e+00
Semi-major axis (a)1.4039472551 AU ± 3.00e+00
Inclination (i)20.93071887° ± 4.00e+00
Long. of Asc. Node (Ω)129.73173744° ± 5.00e+00
Arg. of Perihelion (ω)254.10494834° ± 6.00e+00
Mean Anomaly (M)181.12184640° ± 8.33e-05
Mean Motion (n)0.5924969077°/day ± 1.90e+00
Perihelion dist (q)0.90669255 AU ± 3.41e+00
Aphelion dist (Q)1.90120196 AU ± 4.94e+00
Orbital Period1.66351296 yr ± 5.33e+00
NGA Modelr2
A24.86502687e-06 AU/d²
Physical Parameters
H (abs. magnitude)15.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.341″
Uncertainty0
Orbit TypeApollo
MOID0.078006 AU
Observations Used7901
Radar Obs Used4
Gaia Obs Used108
Oppositions14
Arc Total1982-2017
First Observation Used1982-02-02
Last Observation Used2026-04-05
Observations (11858)
Date Type RA Dec Mag Band Observatory
2004-05-08 07:31:10 C 14 15 12.61 +29 07 24.3 r H41
2004-05-08 07:33:00 C 14 15 12.55 +29 07 24.3 r H41
2004-05-08 07:35:22 C 14 15 12.41 +29 07 24.6 r H41
2004-05-08 07:39:44 C 14 15 12.12 +29 07 24.0 r H41
2004-05-08 07:44:42 C 14 15 11.79 +29 07 24.7 r H41
2004-05-08 21:56:10 C 14 14 16.75 +29 07 10.8 o 084
2004-05-09 07:16:00 C 14 13 40.47 +29 06 59.5 r H41
2004-05-09 07:20:38 C 14 13 40.21 +29 06 58.5 r H41
2004-05-09 07:22:45 C 14 13 39.99 +29 06 59.8 r H41
2004-05-09 07:26:17 C 14 13 39.87 +29 06 58.8 r H41
2004-05-09 22:44:20 C 14 12 41.13 +29 06 20.6 o 084
2004-05-10 07:25:52 C 14 12 07.91 +29 05 56.0 r H41
2004-05-10 07:28:55 C 14 12 07.72 +29 05 56.5 r H41
2004-05-10 07:31:16 C 14 12 07.57 +29 05 55.3 r H41
2004-05-10 07:33:29 C 14 12 07.44 +29 05 55.9 r H41
2004-05-11 04:49:34 C 14 10 47.58 +29 04 29.8 c H41
2004-05-11 04:54:20 C 14 10 47.30 +29 04 28.6 c H41
2004-05-11 04:56:47 C 14 10 47.16 +29 04 28.7 c H41
2004-05-11 05:40:05 C 14 10 44.32 +29 04 23.7 r 750
2004-05-11 05:44:47 C 14 10 44.00 +29 04 23.4 r 750
2004-05-11 06:02:48 C 14 10 43.03 +29 04 23.9 17.8 c 704
2004-05-11 06:15:39 C 14 10 42.18 +29 04 22.7 17.8 c 704
2004-05-11 06:28:31 C 14 10 41.34 +29 04 21.9 17.7 c 704
2004-05-11 06:41:35 C 14 10 40.54 +29 04 20.3 17.9 c 704
2004-05-11 21:09:23 C 14 09 46.92 +29 03 00.3 r 185
2004-05-11 21:11:12 C 14 09 46.78 +29 03 00.1 r A16
2004-05-11 21:19:21 C 14 09 46.32 +29 02 59.3 r A16
2004-05-11 21:27:17 C 14 09 45.80 +29 02 58.7 r A16
2004-05-11 21:33:27 C 14 09 45.43 +29 02 57.9 r 185
2004-05-11 21:35:13 C 14 09 45.27 +29 02 58.3 r A16
2004-05-11 21:43:56 C 14 09 44.68 +29 02 57.1 r A16
2004-05-11 21:54:36 C 14 09 44.08 +29 02 56.1 r 185
2004-05-12 21:42:56 C 14 08 16.83 +29 00 16.1 o 084
2004-05-12 23:01:58 C 14 08 11.95 +29 00 06.2 o 084
2004-05-13 21:47:35 C 14 06 50.50 +28 57 00.7 o 084
2004-05-14 21:20:43 C 14 05 27.78 +28 53 13.8 o 084
2004-05-16 22:03:18 C 14 02 42.56 +28 43 39.2 o 084
2004-05-16 22:28:25 C 14 02 41.28 +28 43 35.5 o 198
2004-05-16 22:30:31 C 14 02 41.16 +28 43 35.0 o 198
2004-05-16 22:32:36 C 14 02 41.04 +28 43 34.9 o 198
2004-05-16 22:37:50 C 14 02 40.75 +28 43 33.7 o 198
2004-05-16 23:02:21 C 14 02 39.30 +28 43 27.9 r 240
2004-05-16 23:13:10 C 14 02 38.73 +28 43 25.5 r 240
2004-05-16 23:25:47 C 14 02 38.00 +28 43 22.6 r 240
2004-05-16 23:29:24 C 14 02 37.81 +28 43 21.8 r 240
2004-05-16 23:36:36 C 14 02 37.42 +28 43 20.1 r 240
2004-05-17 20:42:40 C 14 01 28.84 +28 38 26.2 r A16
2004-05-17 20:50:42 C 14 01 28.43 +28 38 25.0 r A16
2004-05-17 21:00:05 C 14 01 27.90 +28 38 22.1 r A16
2004-05-17 21:12:05 C 14 01 27.31 +28 38 19.6 r A16
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1986-07-18 07:50:00 202602 6 Hz 2380 -1 -1
1986-07-18.326389 20260200 600 Hz 2380 251 251
1996-07-29 09:10:00 469654 5 Hz 8510 -14 -14
1996-07-29 13:00:00 133166634 10 us 8510 -14 -14
1996-07-29.381944 46965400 500 Hz 8510 253 253
1996-07-29.541667 13316663400 10000 us 8510 253 253
1996-07-30 10:50:00 410012.2 5 Hz 8510 -14 -14
1996-07-30.451389 41001220 500 Hz 8510 253 253
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)