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
2017-04-17 04:11:21 C 09 47 11.90 +36 01 56.1 q 703
2017-04-17 04:17:40 C 09 47 12.09 +36 01 54.1 q 703
2017-04-22 04:31:14 C 09 51 28.98 +35 24 41.8 q 703
2017-04-22 04:38:55 C 09 51 29.24 +35 24 39.0 q 703
2017-04-22 04:46:36 C 09 51 29.55 +35 24 36.6 q 703
2017-04-22 04:54:16 C 09 51 29.79 +35 24 34.6 q 703
2017-04-26 09:34:44 C 09 55 34.58 +34 50 16.2 L T05
2017-04-26 09:56:04 C 09 55 35.50 +34 50 08.1 L T05
2017-04-26 10:17:14 C 09 55 36.37 +34 50 01.0 L T05
2017-04-26 10:59:07 C 09 55 38.16 +34 49 45.3 L T05
2017-04-28 20:01:40 C 09 58 08.33 +34 29 09.7 q 160
2017-04-28 20:04:28 C 09 58 08.44 +34 29 08.6 q 160
2017-04-28 20:07:39 C 09 58 08.60 +34 29 07.6 q 160
2017-04-29 20:20:09 C 09 59 14.33 +34 20 09.7 U 160
2017-04-29 20:23:24 C 09 59 14.48 +34 20 08.8 U 160
2017-04-29 20:26:19 C 09 59 14.62 +34 20 07.5 U 160
2017-04-30 05:14:19 C 09 59 38.74 +34 16 51.0 q 703
2017-04-30 05:22:43 C 09 59 39.09 +34 16 47.9 q 703
2017-04-30 05:35:34 C 09 59 39.67 +34 16 42.5 q 703
2017-04-30 05:43:57 C 09 59 40.06 +34 16 39.2 q 703
2017-05-17 04:19:43 C 10 20 46.64 +31 28 36.7 q 703
2017-05-17 04:26:02 C 10 20 47.00 +31 28 33.7 q 703
2017-05-17 04:32:20 C 10 20 47.31 +31 28 30.3 q 703
2017-05-20 04:41:58 C 10 24 56.14 +30 55 52.2 q 703
2017-05-20 04:49:40 C 10 24 56.66 +30 55 48.8 q 703
2017-05-20 04:57:22 C 10 24 57.11 +30 55 45.4 q 703
2017-05-20 07:18:51 C 10 25 05.29 +30 54 41.9 L T05
2017-05-20 07:36:59 C 10 25 06.44 +30 54 33.0 L T05
2017-05-20 08:18:29 C 10 25 08.70 +30 54 14.1 L T05
2017-05-20 08:25:16 C 10 25 09.12 +30 54 11.7 L T05
2017-05-30 03:50:32 C 10 39 19.74 +29 02 48.5 q 703
2017-05-30 03:58:58 C 10 39 20.28 +29 02 43.9 q 703
2017-05-30 04:07:22 C 10 39 20.85 +29 02 40.1 q 703
2017-06-05 05:15:21 C 10 48 28.82 +27 50 48.4 q 703
2017-06-05 05:21:48 C 10 48 29.25 +27 50 43.9 q 703
2017-06-05 05:28:14 C 10 48 29.63 +27 50 41.3 q 703
2017-06-17 03:49:48 C 11 07 10.19 +25 23 04.3 q 703
2017-06-17 03:58:19 C 11 07 10.72 +25 22 59.6 q 703
2017-06-17 04:06:45 C 11 07 11.33 +25 22 55.1 q 703
2017-06-27 03:54:10 C 11 23 21.82 +23 14 08.4 q 703
2017-06-27 03:59:48 C 11 23 22.24 +23 14 04.9 q 703
2017-06-27 04:05:26 C 11 23 22.68 +23 14 01.9 q 703
2017-06-27 04:11:03 C 11 23 22.95 +23 13 58.3 q 703
2018-11-21 13:03:24 C 12 46 31.74 +04 44 34.6 U I41
2018-11-21 13:10:18 C 12 46 32.35 +04 44 33.2 U I41
2018-11-21 13:17:13 C 12 46 32.97 +04 44 31.8 U I41
2018-11-21 13:24:10 C 12 46 33.57 +04 44 30.2 U I41
2018-12-10 11:55:52 C 13 25 41.65 +03 32 16.2 V 703
2018-12-10 12:03:30 C 13 25 42.38 +03 32 13.9 V 703
2018-12-10 12:11:09 C 13 25 43.00 +03 32 13.5 V 703
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)