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
2011-05-23 01:37:28 C 20 30 05.75 +08 08 12.3 c A24
2011-05-28 09:06:40 C 20 39 49.47 +08 58 05.2 16.7 c 704
2011-05-28 09:22:14 C 20 39 50.67 +08 58 10.1 17.0 c 704
2011-05-28 09:37:49 C 20 39 51.83 +08 58 15.7 17.0 c 704
2011-05-28 09:53:33 C 20 39 53.00 +08 58 21.6 17.1 c 704
2011-05-28 10:09:37 C 20 39 54.18 +08 58 27.7 17.0 c 704
2011-05-30 01:28:23 C 20 42 56.91 +09 13 08.9 c A24
2011-05-30 01:29:25 C 20 42 56.98 +09 13 09.1 c A24
2011-06-03 23:01:50 C 20 52 13.66 +09 54 43.6 u 557
2011-06-03 23:56:02 C 20 52 17.92 +09 55 02.1 u 557
2011-06-04 00:50:06 C 20 52 22.15 +09 55 20.5 u 557
2011-06-04 23:02:11 C 20 54 09.69 +10 02 41.9 u 557
2011-06-05 00:03:41 C 20 54 14.55 +10 03 02.4 u 557
2011-06-05 00:44:08 C 20 54 17.74 +10 03 15.7 u 557
2011-06-05 22:48:48 C 20 56 05.57 +10 10 23.5 u 557
2011-06-05 23:49:05 C 20 56 10.39 +10 10 42.9 u 557
2011-06-06 00:45:20 C 20 56 14.86 +10 11 01.1 u 557
2011-06-13 09:27:04 C 21 11 15.25 +11 00 33.2 u 703
2011-06-13 09:36:22 C 21 11 16.08 +11 00 35.6 u 703
2011-06-13 09:45:42 C 21 11 16.87 +11 00 37.6 u 703
2011-06-13 09:55:02 C 21 11 17.62 +11 00 39.9 u 703
2011-06-13 23:10:01 C 21 12 29.02 +11 03 40.7 c A24
2011-06-13 23:10:44 C 21 12 29.07 +11 03 40.8 c A24
2011-06-14 23:10:12 C 21 14 39.10 +11 08 58.4 c A24
2011-06-14 23:10:54 C 21 14 39.13 +11 08 57.9 c A24
2011-06-14 23:13:13 C 21 14 39.26 +11 08 58.5 c A24
2011-06-14 23:13:55 C 21 14 39.40 +11 08 59.1 c A24
2011-06-23 23:11:41 C 21 36 00.32 +11 37 42.4 c A24
2011-06-23 23:12:44 C 21 36 00.43 +11 37 42.5 c A24
2011-06-24 22:03:57 C 21 38 30.78 +11 38 13.3 u 557
2011-06-24 23:04:50 C 21 38 37.41 +11 38 14.5 u 557
2011-06-24 23:50:48 C 21 38 42.52 +11 38 16.8 c A24
2011-06-24 23:51:50 C 21 38 42.62 +11 38 16.7 c A24
2011-06-25 00:06:13 C 21 38 44.05 +11 38 15.5 u 557
2011-06-25 00:47:32 C 21 38 48.64 +11 38 17.6 c A24
2011-06-25 00:48:34 C 21 38 48.75 +11 38 17.6 c A24
2011-06-25 01:04:03 C 21 38 50.29 +11 38 16.3 u 557
2011-06-25 23:31:00 C 21 41 22.33 +11 38 09.6 c A24
2011-06-25 23:32:03 C 21 41 22.46 +11 38 09.7 c A24
2011-06-26 00:19:43 C 21 41 27.73 +11 38 09.2 c A24
2011-06-26 00:20:45 C 21 41 27.85 +11 38 09.2 c A24
2011-06-26 22:11:47 C 21 43 59.32 +11 37 22.8 u 557
2011-06-26 23:09:50 C 21 44 05.96 +11 37 20.6 u 557
2011-06-26 23:35:51 C 21 44 09.04 +11 37 18.6 u J93
2011-06-26 23:37:11 C 21 44 09.23 +11 37 20.8 c A24
2011-06-26 23:38:14 C 21 44 09.35 +11 37 20.7 c A24
2011-06-26 23:39:40 C 21 44 09.52 +11 37 18.5 u J93
2011-06-26 23:43:28 C 21 44 09.92 +11 37 18.0 u J93
2011-06-27 00:10:49 C 21 44 12.91 +11 37 18.1 u 557
2011-06-27 00:26:49 C 21 44 14.87 +11 37 18.8 c A24
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)