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
2019-05-28 09:12:46 C 14 03 59.83 +27 00 16.2 V T05
2019-05-28 09:40:15 C 14 03 58.53 +27 00 05.1 V T05
2019-05-28 09:50:54 C 14 03 58.05 +27 00 00.5 V T05
2019-05-29 05:46:21 C 14 03 06.85 +26 51 45.8 V G96
2019-05-29 05:54:29 C 14 03 06.50 +26 51 42.6 V G96
2019-05-29 06:02:37 C 14 03 06.13 +26 51 38.8 V G96
2019-05-29 06:10:45 C 14 03 05.79 +26 51 35.0 V G96
2019-05-30 09:06:41 C 14 01 59.11 +26 40 00.6 V T08
2019-05-30 09:12:06 C 14 01 58.89 +26 39 58.2 V T08
2019-05-30 09:21:53 C 14 01 58.48 +26 39 53.4 V T08
2019-05-30 09:39:34 C 14 01 57.73 +26 39 45.7 V T08
2019-05-31 06:29:27 C 14 01 08.44 +26 30 22.5 V 703
2019-05-31 06:37:43 C 14 01 08.11 +26 30 18.8 V 703
2019-05-31 06:45:59 C 14 01 07.77 +26 30 14.9 V 703
2019-05-31 06:54:14 C 14 01 07.45 +26 30 10.5 V 703
2019-05-31 22:47:52 C 14 00 31.15 +26 22 47.9 q 160
2019-05-31 22:51:52 C 14 00 31.02 +26 22 46.1 q 160
2019-05-31 22:55:55 C 14 00 30.85 +26 22 44.1 q 160
2019-06-01 09:24:40 C 14 00 07.55 +26 17 50.3 V T05
2019-06-01 09:30:24 C 14 00 07.33 +26 17 47.9 V T05
2019-06-01 09:58:59 C 14 00 06.21 +26 17 33.6 V T05
2019-06-01 10:07:49 C 14 00 05.90 +26 17 29.3 V T05
2019-06-01 22:18:14 C 13 59 39.60 +26 11 35.4 q 160
2019-06-01 22:22:17 C 13 59 39.47 +26 11 33.6 q 160
2019-06-01 22:26:21 C 13 59 39.21 +26 11 30.8 q 160
2019-06-04 06:24:02 C 13 57 46.38 +25 43 21.7 V 703
2019-06-04 06:32:12 C 13 57 46.10 +25 43 17.3 V 703
2019-06-04 06:40:24 C 13 57 45.81 +25 43 12.6 V 703
2019-06-04 06:48:36 C 13 57 45.55 +25 43 07.8 V 703
2019-06-07 07:23:03 C 13 55 40.65 +25 03 41.6 V T08
2019-06-07 07:52:24 C 13 55 39.84 +25 03 24.9 V T08
2019-06-07 07:59:26 C 13 55 39.63 +25 03 21.2 V T08
2019-06-07 08:14:58 C 13 55 39.20 +25 03 12.3 V T08
2019-06-08 06:02:26 C 13 55 06.29 +24 50 43.2 V 703
2019-06-08 06:10:41 C 13 55 06.06 +24 50 38.2 V 703
2019-06-08 06:18:57 C 13 55 05.84 +24 50 33.4 V 703
2019-06-08 06:27:13 C 13 55 05.66 +24 50 28.3 V 703
2019-06-09 08:10:32 C 13 54 29.83 +24 35 28.3 V T05
2019-06-09 08:18:34 C 13 54 29.63 +24 35 23.6 V T05
2019-06-09 08:24:08 C 13 54 29.50 +24 35 20.4 V T05
2019-06-09 08:47:10 C 13 54 28.93 +24 35 06.5 V T05
2019-06-11 06:59:26 C 13 53 32.15 +24 07 15.5 V T08
2019-06-11 07:03:48 C 13 53 32.06 +24 07 12.5 V T08
2019-06-11 07:11:16 C 13 53 31.90 +24 07 07.6 V T08
2019-06-11 07:37:36 C 13 53 31.36 +24 06 51.7 V T08
2019-06-13 07:39:55 C 13 52 42.22 +23 36 49.1 V T05
2019-06-13 07:44:42 C 13 52 42.16 +23 36 46.1 V T05
2019-06-13 08:10:59 C 13 52 41.69 +23 36 28.9 V T05
2019-06-15 06:09:20 C 13 52 04.10 +23 06 45.9 V G96
2019-06-15 06:16:41 C 13 52 03.96 +23 06 41.6 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)