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
2021-10-28 12:06:01 C 09 25 09.95 -13 03 11.4 V 703
2021-10-29 14:19:23 C 09 27 49.87 -12 56 13.1 V T08
2021-10-29 14:34:40 C 09 27 51.37 -12 56 09.3 V T08
2021-10-29 14:39:59 C 09 27 51.91 -12 56 08.3 V T08
2021-10-31 14:44:07 C 09 32 41.76 -12 43 18.7 V T05
2021-10-31 15:05:09 C 09 32 43.79 -12 43 13.2 V T05
2021-10-31 15:19:53 C 09 32 45.22 -12 43 09.2 V T05
2021-10-31 15:30:00 C 09 32 46.20 -12 43 06.6 V T05
2021-11-02 14:50:43 C 09 37 27.89 -12 30 16.9 V T08
2021-11-02 14:57:21 C 09 37 28.52 -12 30 15.3 V T08
2021-11-02 15:11:48 C 09 37 29.89 -12 30 11.4 V T08
2021-11-02 15:19:50 C 09 37 30.66 -12 30 09.2 V T08
2021-11-02 15:21:10 C 09 37 30.79 -12 30 08.9 V T08
2021-11-02 15:31:08 C 09 37 31.73 -12 30 06.4 V T08
2021-11-02 15:32:27 C 09 37 31.85 -12 30 05.8 V T08
2021-11-04 11:59:32 C 09 41 52.62 -12 17 53.2 V 703
2021-11-04 12:04:41 C 09 41 53.11 -12 17 51.9 V 703
2021-11-04 12:09:50 C 09 41 53.59 -12 17 50.3 V 703
2021-11-04 12:14:59 C 09 41 54.09 -12 17 49.0 V 703
2021-11-04 14:50:54 C 09 42 09.34 -12 17 03.5 V T05
2021-11-04 14:58:49 C 09 42 10.07 -12 17 01.2 V T05
2021-11-04 15:21:56 C 09 42 12.25 -12 16 55.0 V T05
2021-11-04 15:30:31 C 09 42 13.05 -12 16 52.6 V T05
2021-11-06 13:51:09 C 09 46 40.98 -12 03 49.1 V T08
2021-11-06 13:55:49 C 09 46 41.43 -12 03 47.8 V T08
2021-11-06 14:04:27 C 09 46 42.22 -12 03 45.4 V T08
2021-11-06 14:23:03 C 09 46 43.96 -12 03 40.4 V T08
2021-11-08 13:48:52 C 09 51 13.76 -11 49 59.5 V T05
2021-11-08 13:53:29 C 09 51 14.18 -11 49 58.1 V T05
2021-11-08 14:02:07 C 09 51 14.95 -11 49 55.8 V T05
2021-11-08 14:21:16 C 09 51 16.71 -11 49 50.3 V T05
2021-11-09 14:43:38 C 09 53 33.54 -11 42 39.5 V T08
2021-11-09 14:49:37 C 09 53 34.08 -11 42 37.8 V T08
2021-11-09 15:13:30 C 09 53 36.24 -11 42 30.9 V T08
2021-11-09 15:28:46 C 09 53 37.60 -11 42 26.2 V T08
2021-11-10 15:02:42 C 09 55 48.91 -11 35 23.7 V T08
2021-11-10 15:08:42 C 09 55 49.46 -11 35 21.7 V T08
2021-11-10 15:19:33 C 09 55 50.43 -11 35 18.9 V T08
2021-11-10 15:27:38 C 09 55 51.13 -11 35 16.2 V T08
2021-11-11 11:32:06 C 09 57 42.16 -11 29 13.1 V 703
2021-11-11 11:39:51 C 09 57 42.87 -11 29 10.8 V 703
2021-11-11 11:47:37 C 09 57 43.53 -11 29 07.7 V 703
2021-11-11 11:55:22 C 09 57 44.31 -11 29 05.6 V 703
2021-11-11 14:36:35 C 09 57 59.14 -11 28 14.7 V T05
2021-11-11 14:42:31 C 09 57 59.66 -11 28 12.9 V T05
2021-11-11 14:53:44 C 09 58 00.66 -11 28 09.7 V T05
2021-11-11 15:20:48 C 09 58 03.06 -11 28 01.4 V T05
2021-11-16 13:48:05 C 10 08 40.38 -10 50 13.9 V T05
2021-11-16 13:52:41 C 10 08 40.77 -10 50 12.3 V T05
2021-11-16 14:01:58 C 10 08 41.55 -10 50 09.3 V T05
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)