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
2016-06-19 13:08:04 C 21 44 13.077 +10 47 07.72 L F51
2016-06-19 13:26:17 C 21 44 15.15 +10 47 09.6 L T05
2016-06-19 13:43:11 C 21 44 17.06 +10 47 11.4 L T05
2016-06-19 14:03:10 C 21 44 19.32 +10 47 13.5 L T05
2016-06-20 08:16:41 C 21 46 30.02 +10 48 51.8 u H21
2016-06-20 08:19:12 C 21 46 30.29 +10 48 52.0 u H21
2016-06-20 08:21:43 C 21 46 30.59 +10 48 52.1 u H21
2016-06-20 08:24:14 C 21 46 30.89 +10 48 52.5 u H21
2016-06-20 08:26:45 C 21 46 31.18 +10 48 52.7 u H21
2016-06-20 08:29:16 C 21 46 31.48 +10 48 52.9 u H21
2016-06-20 08:31:46 C 21 46 31.77 +10 48 53.1 u H21
2016-06-20 08:34:17 C 21 46 32.06 +10 48 53.4 u H21
2016-06-20 08:36:48 C 21 46 32.35 +10 48 53.5 u H21
2016-06-20 08:39:04 C 21 46 32.62 +10 48 53.7 u H21
2016-06-20 22:33:42 C 21 48 14.31 +10 49 58.5 o 108
2016-06-20 22:35:43 C 21 48 14.56 +10 49 58.8 o 108
2016-06-20 22:37:43 C 21 48 14.78 +10 49 59.4 o 108
2016-06-22 01:09:58 C 21 51 31.26 +10 51 38.0 q 160
2016-06-22 01:11:07 C 21 51 31.39 +10 51 38.0 q 160
2016-06-22 01:12:10 C 21 51 31.51 +10 51 38.0 q 160
2016-06-27 00:19:54 C 22 07 27.75 +10 49 39.3 q 160
2016-06-27 00:22:21 C 22 07 28.10 +10 49 39.0 q 160
2016-06-27 00:24:49 C 22 07 28.44 +10 49 38.7 q 160
2016-06-27 13:38:45 C 22 09 22.53 +10 48 29.7 L T05
2016-06-27 14:02:13 C 22 09 25.80 +10 48 27.3 L T05
2016-06-27 14:26:02 C 22 09 29.13 +10 48 24.9 L T05
2016-06-27 14:49:41 C 22 09 32.43 +10 48 22.0 L T05
2016-07-03 01:48:37 C 22 30 20.48 +10 20 25.9 q K38
2016-07-03 02:00:40 C 22 30 22.52 +10 20 22.0 q K38
2016-07-03 02:12:43 C 22 30 24.55 +10 20 18.2 q K38
2016-07-03 02:24:46 C 22 30 26.59 +10 20 14.2 q K38
2016-07-03 08:36:43 C 22 31 31.61 +10 18 14.2 q H47
2016-07-03 08:39:46 C 22 31 32.13 +10 18 13.3 q H47
2016-07-03 08:42:10 C 22 31 32.55 +10 18 12.4 q H47
2016-07-03 08:44:48 C 22 31 32.96 +10 18 11.6 q H47
2016-07-04 10:16:05 C 22 36 06.05 +10 08 46.5 q 703
2016-07-04 10:22:34 C 22 36 07.20 +10 08 44.0 q 703
2016-07-04 10:35:34 C 22 36 09.52 +10 08 38.4 q 703
2016-07-05 08:26:01 C 22 40 10.79 +09 59 49.1 r Y00
2016-07-05 08:28:20 C 22 40 11.31 +09 59 47.3 r Y00
2016-07-05 08:30:50 C 22 40 11.84 +09 59 46.6 r Y00
2016-07-07 09:15:30 C 22 49 44.19 +09 34 46.1 q 703
2016-07-07 09:18:43 C 22 49 44.81 +09 34 44.2 q G96
2016-07-07 09:22:44 C 22 49 45.62 +09 34 42.1 q 703
2016-07-07 09:26:59 C 22 49 46.44 +09 34 39.7 q G96
2016-07-07 09:35:13 C 22 49 48.06 +09 34 34.6 q G96
2016-07-07 09:37:10 C 22 49 48.44 +09 34 33.5 q 703
2016-07-09 13:45:40 C 23 00 50.38 +09 01 17.6 L T05
2016-07-09 14:01:39 C 23 00 53.77 +09 01 06.2 L T05
2016-07-09 14:09:06 C 23 00 55.37 +09 01 00.9 L 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)