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
2009-03-01 12:00:53 C 15 17 31.99 +12 10 54.2 r 703
2009-03-01 12:12:12 C 15 17 32.20 +12 11 01.8 r 703
2009-03-01 12:23:32 C 15 17 32.42 +12 11 09.9 r 703
2009-03-07 23:27:54 C 15 19 53.84 +14 03 45.6 r B67
2009-03-07 23:42:49 C 15 19 54.01 +14 03 57.3 r B67
2009-03-07 23:57:34 C 15 19 54.13 +14 04 08.5 r B67
2009-03-15 01:22:33 C 15 20 32.40 +16 16 40.7 r J75
2009-03-15 01:40:59 C 15 20 32.30 +16 16 56.0 r J75
2009-03-15 01:59:58 C 15 20 32.17 +16 17 10.6 r J75
2009-03-17 08:39:10 C 15 20 16.84 +17 01 32.8 18.0 c 704
2009-03-17 08:56:16 C 15 20 16.71 +17 01 48.5 18.5 c 704
2009-03-17 09:13:17 C 15 20 16.62 +17 02 02.6 18.1 c 704
2009-03-17 09:30:20 C 15 20 16.40 +17 02 14.8 18.1 c 704
2009-03-17 09:47:24 C 15 20 16.24 +17 02 28.8 18.1 c 704
2009-03-22 08:02:49 C 15 18 53.46 +18 40 07.8 r 703
2009-03-22 08:09:44 C 15 18 53.24 +18 40 13.8 r 703
2009-03-22 08:16:40 C 15 18 53.13 +18 40 20.2 r 703
2009-03-22 08:23:41 C 15 18 52.92 +18 40 26.2 r 703
2009-03-29 09:01:17 C 15 14 55.10 +21 00 07.9 r 703
2009-03-29 09:10:46 C 15 14 54.85 +21 00 14.1 r 703
2009-03-29 09:20:19 C 15 14 54.49 +21 00 23.4 r 703
2009-03-29 09:30:01 C 15 14 54.20 +21 00 31.4 r 703
2009-04-14 21:53:17 C 14 56 48.61 +25 53 04.2 c 196
2009-04-14 22:07:43 C 14 56 47.74 +25 53 13.6 c 196
2009-04-18 20:41:11 C 14 50 58.36 +26 47 38.3 r A13
2009-04-18 21:11:22 C 14 50 56.28 +26 47 53.4 r A13
2009-04-19 07:06:59 C 14 50 18.05 +26 53 12.0 17.6 c 704
2009-04-19 07:22:13 C 14 50 17.05 +26 53 20.1 17.8 c 704
2009-04-19 07:37:28 C 14 50 16.03 +26 53 28.1 17.6 c 704
2009-04-19 07:52:43 C 14 50 14.99 +26 53 35.8 17.6 c 704
2009-04-19 08:07:58 C 14 50 13.97 +26 53 44.1 17.6 c 704
2009-04-19 22:56:39 C 14 49 16.78 +27 01 17.9 o J41
2009-04-19 23:21:27 C 14 49 15.15 +27 01 30.7 o J41
2009-04-19 23:44:35 C 14 49 13.56 +27 01 42.1 o J41
2009-04-22 23:08:25 C 14 44 29.28 +27 35 19.8 18.0 r C20
2009-04-23 21:03:09 C 14 43 00.52 +27 44 34.5 17.5 r C20
2009-04-25 23:17:57 C 14 39 33.51 +28 03 49.6 17.6 r C20
2009-04-26 21:14:43 C 14 38 02.63 +28 11 21.4 18.2 r C20
2009-04-28 21:26:09 C 14 34 41.60 +28 25 57.8 A50
2009-04-28 21:28:21 C 14 34 41.44 +28 25 58.3 A50
2009-04-28 21:30:31 C 14 34 41.29 +28 25 58.9 A50
2009-04-28 22:43:34 C 14 34 36.07 +28 26 19.1 A50
2009-05-01 22:42:27 C 14 29 35.07 +28 43 04.5 17.5 r C20
2009-05-13 00:13:40 C 14 11 57.93 +28 53 36.7 17.7 r C20
2009-05-13 08:35:09 C 14 11 27.24 +28 52 43.2 r 703
2009-05-13 08:42:56 C 14 11 26.77 +28 52 42.4 r 703
2009-05-13 08:50:40 C 14 11 26.26 +28 52 41.3 r 703
2009-05-13 08:58:19 C 14 11 25.80 +28 52 40.4 r 703
2009-05-18 21:36:48 C 14 03 47.81 +28 28 18.6 v 434
2009-05-18 21:39:25 C 14 03 47.75 +28 28 17.3 v 434
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)