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
2004-06-09 05:43:36 C 13 42 49.25 +24 37 59.0 18.1 c 704
2004-06-09 06:12:32 C 13 42 48.76 +24 37 41.8 18.3 c 704
2004-06-14 03:51:28 C 13 41 31.345 +23 23 28.85 n 645
2004-06-14 03:52:39 C 13 41 31.331 +23 23 27.89 n 645
2004-06-14 03:55:03 C 13 41 31.313 +23 23 26.32 n 645
2004-06-14 03:56:14 C 13 41 31.298 +23 23 25.38 n 645
2004-06-22 04:16:41 C 13 41 25.48 +21 11 54.8 18.1 c 704
2004-06-22 04:30:59 C 13 41 25.56 +21 11 44.3 18.6 c 704
2004-06-22 04:44:43 C 13 41 25.59 +21 11 35.1 18.6 c 704
2004-06-22 04:58:17 C 13 41 25.68 +21 11 25.1 19.5 c 704
2004-06-22 05:11:55 C 13 41 25.76 +21 11 14.0 19.1 c 704
2004-07-06 03:19:10 C 13 46 33.53 +17 03 04.5 c H41
2004-07-06 03:27:32 C 13 46 33.75 +17 02 57.7 c H41
2004-07-06 03:29:57 C 13 46 33.80 +17 02 56.1 c H41
2004-08-03 04:23:18 C 14 12 45.48 +08 09 47.7 r 649
2004-08-03 04:28:26 C 14 12 45.75 +08 09 43.1 r 649
2004-08-03 04:33:34 C 14 12 46.03 +08 09 39.1 r 649
2004-08-05 20:26:48 C 14 16 08.95 +07 18 16.6 r 941
2004-08-05 20:27:56 C 14 16 09.02 +07 18 15.6 r 941
2004-08-05 20:29:04 C 14 16 09.07 +07 18 14.8 r 941
2004-08-05 20:30:14 C 14 16 09.13 +07 18 13.8 r 941
2004-08-05 20:31:22 C 14 16 09.20 +07 18 12.8 r 941
2006-05-20 08:00:17 C 20 19 12.87 +08 08 10.3 r H45
2006-05-20 08:01:19 C 20 19 12.93 +08 08 10.7 r H45
2006-05-20 08:04:14 C 20 19 13.15 +08 08 12.1 r H45
2006-05-20 08:07:24 C 20 19 13.34 +08 08 13.4 r H45
2006-05-23 08:50:46 C 20 24 19.00 +08 38 20.7 r H45
2006-05-23 08:52:31 C 20 24 19.13 +08 38 21.5 r H45
2006-05-23 08:54:29 C 20 24 19.26 +08 38 22.7 r H45
2006-05-23 09:00:21 C 20 24 19.66 +08 38 25.2 r H45
2006-05-23 09:01:03 C 20 24 19.72 +08 38 25.3 r H45
2006-05-25 09:05:39 C 20 27 42.33 +08 57 55.8 17.2 c 704
2006-05-25 09:21:45 C 20 27 43.43 +08 58 01.9 17.5 c 704
2006-05-25 09:37:49 C 20 27 44.60 +08 58 08.5 18.8 c 704
2006-05-25 09:53:57 C 20 27 45.59 +08 58 14.9 17.5 c 704
2006-05-25 10:10:22 C 20 27 46.67 +08 58 22.4 17.1 c 704
2006-05-30 09:32:06 C 20 36 12.61 +09 44 51.7 17.9 c 704
2006-05-30 09:49:00 C 20 36 13.61 +09 44 58.7 17.3 c 704
2006-05-30 10:06:01 C 20 36 14.80 +09 45 04.2 17.0 c 704
2006-05-30 10:22:53 C 20 36 15.92 +09 45 11.6 17.0 c 704
2006-06-14 10:38:07 C 21 03 02.74 +11 37 40.6 o 644
2006-06-14 10:54:01 C 21 03 03.95 +11 37 44.3 o 644
2006-06-14 11:09:54 C 21 03 05.15 +11 37 47.9 o 644
2006-06-18 09:43:24 C 21 10 48.57 +11 56 24.3 r 683
2006-06-18 10:22:50 C 21 10 51.61 +11 56 31.9 r 683
2006-06-19 09:41:23 C 21 12 50.42 +12 00 04.2 r 683
2006-06-19 10:01:10 C 21 12 52.01 +12 00 09.3 r 683
2006-06-20 09:59:17 C 21 14 55.68 +12 03 19.8 r 683
2006-06-20 10:19:02 C 21 14 57.26 +12 03 21.5 r 683
2006-06-21 09:37:40 C 21 17 00.07 +12 05 58.2 r 683
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)