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
2016-12-15 08:38:56 C 10 52 01.87 -06 49 13.2 u H21
2016-12-15 08:41:27 C 10 52 02.00 -06 49 11.3 u H21
2016-12-15 08:43:58 C 10 52 02.11 -06 49 09.2 u H21
2016-12-15 08:46:29 C 10 52 02.23 -06 49 07.5 u H21
2016-12-15 08:49:01 C 10 52 02.35 -06 49 05.5 u H21
2016-12-15 08:51:32 C 10 52 02.47 -06 49 03.5 u H21
2016-12-15 08:54:03 C 10 52 02.59 -06 49 01.6 u H21
2016-12-15 08:56:34 C 10 52 02.70 -06 48 59.6 u H21
2016-12-15 08:59:05 C 10 52 02.81 -06 48 57.7 u H21
2016-12-15 09:01:37 C 10 52 02.94 -06 48 55.8 u H21
2016-12-15 09:04:08 C 10 52 03.05 -06 48 53.8 u H21
2016-12-15 09:06:39 C 10 52 03.16 -06 48 51.9 u H21
2016-12-15 09:09:10 C 10 52 03.29 -06 48 49.9 u H21
2016-12-15 09:11:42 C 10 52 03.41 -06 48 48.1 u H21
2016-12-15 09:14:13 C 10 52 03.53 -06 48 46.3 u H21
2016-12-15 09:16:44 C 10 52 03.65 -06 48 44.2 u H21
2016-12-15 09:19:14 C 10 52 03.75 -06 48 42.3 u H21
2016-12-15 09:21:45 C 10 52 03.89 -06 48 40.3 u H21
2016-12-15 09:24:01 C 10 52 03.98 -06 48 38.6 u H21
2016-12-16 04:02:34 C 10 52 58.54 -06 34 09.1 q 160
2016-12-16 04:04:30 C 10 52 58.62 -06 34 07.5 q 160
2016-12-16 04:06:27 C 10 52 58.70 -06 34 05.5 q 160
2016-12-18 02:53:10 C 10 55 10.04 -05 56 16.2 q 160
2016-12-18 02:55:07 C 10 55 10.13 -05 56 14.9 q 160
2016-12-18 02:57:04 C 10 55 10.21 -05 56 13.2 q 160
2016-12-23 02:07:19 C 11 00 00.39 -04 10 05.2 q 160
2016-12-23 02:09:28 C 11 00 00.46 -04 10 03.2 q 160
2016-12-23 02:11:36 C 11 00 00.55 -04 10 01.1 q 160
2016-12-24 03:25:17 C 11 00 53.10 -03 45 37.1 q 160
2016-12-24 03:27:20 C 11 00 53.16 -03 45 35.1 q 160
2016-12-24 03:29:24 C 11 00 53.21 -03 45 33.2 q 160
2016-12-26 06:03:12 C 11 02 29.81 -02 54 07.6 o W92
2016-12-26 06:18:39 C 11 02 30.21 -02 53 51.6 o W92
2016-12-29 09:48:34 C 11 04 28.04 -01 32 07.2 R G45
2016-12-29 09:56:03 C 11 04 28.19 -01 31 58.8 R G45
2016-12-29 10:03:03 C 11 04 28.32 -01 31 50.9 R G45
2016-12-29 10:10:00 C 11 04 28.45 -01 31 43.0 R G45
2016-12-29 10:17:08 C 11 04 28.59 -01 31 34.8 R G45
2016-12-29 10:24:10 C 11 04 28.74 -01 31 26.9 R G45
2017-01-01 03:18:57 C 11 05 44.44 -00 15 14.5 q 160
2017-01-01 03:20:52 C 11 05 44.46 -00 15 12.1 q 160
2017-01-01 03:22:47 C 11 05 44.51 -00 15 10.7 q 160
2017-01-03 14:55:02 C 11 06 32.27 +00 59 38.7 L T05
2017-01-03 15:25:31 C 11 06 32.44 +01 00 18.1 L T05
2017-01-03 15:43:42 C 11 06 32.56 +01 00 41.8 L T05
2017-01-03 16:00:06 C 11 06 32.66 +01 01 02.9 L T05
2017-01-04 02:51:52 C 11 06 39.53 +01 15 06.5 q 160
2017-01-04 02:53:57 C 11 06 39.54 +01 15 09.3 q 160
2017-01-04 02:56:03 C 11 06 39.52 +01 15 11.7 q 160
2017-01-05 03:08:53 C 11 06 51.02 +01 47 18.1 q 160
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)