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
1982-01-20 00:31:42 A 10 55 37.60 +10 51 26.6 095
1982-01-20 03:45:36 A 10 55.6 +10 57 16.0 561
1982-01-21 00:29:57 A 10 54 42.28 +11 34 19.2 095
1982-02-02 09:16:03 A 10 38 17.66 +20 38 33.7 675
1982-02-03 07:19:02 A 10 36 46.50 +21 17 47.5 675
1982-02-03 12:14:02 A 10 36 24.52 +21 26 26.9 675
1982-02-13 05:30:59 A 10 18 49.54 +27 42 57.3 675
1982-02-13 06:11:00 A 10 18 46.17 +27 43 55.5 675
1982-02-28 21:11:00 A 09 51 44.20 +34 24 37.5 17.0 552
1982-02-28 21:38:59 A 09 51 42.28 +34 24 57.4 552
1982-03-01 22:16:00 A 09 50 14.91 +34 41 56.4 17.0 552
1982-03-01 22:43:00 A 09 50 13.35 +34 42 13.6 552
1982-03-21 00:39:52 A 09 34 07.79 +37 16 44.4 A 801
1982-03-27 04:27:46 A 09 33 19.14 +37 18 38.9 A 801
1982-04-01 06:22:00 A 09 34 05.20 +37 08 35.1 675
1982-04-13 02:00:55 A 09 40 02.68 +36 14 56.0 A 801
1982-04-24 03:54:38 A 09 49 42.36 +34 57 05.9 A 801
1982-05-18 02:30:33 A 10 19 13.20 +31 11 50.7 A 801
1984-02-11 11:13:02 A 15 03 44.97 +07 38 29.5 675
1984-03-10 11:13:21 A 15 21 40.63 +14 45 00.1 675
1984-03-11 10:40:21 A 15 21 47.24 +15 03 13.0 675
1984-03-27 08:26:57 A 15 17 36.41 +20 14 07.9 A 801
1984-04-30 05:49:17 A 14 33 49.68 +28 26 20.0 A 801
1984-05-07 06:23:56 A 14 22 14.78 +28 50 03.8 A 801
1984-06-03 04:35:57 A 13 50 06.45 +25 53 18.7 A 801
1986-05-13 10:51:22 A 20 11 26.60 +06 49 06.6 B 691
1986-05-13 11:17:53 A 20 11 28.50 +06 49 18.2 B 691
1986-05-13 11:22:24 A 20 11 28.79 +06 49 19.9 B 691
1986-06-05 07:12:26 A 20 52 20.37 +10 24 08.7 A 801
1986-06-08 08:17:14 A 20 58 09.60 +10 47 17.6 B 691
1986-06-08 08:25:31 A 20 58 10.23 +10 47 20.0 B 691
1986-06-08 08:36:19 A 20 58 11.03 +10 47 23.0 B 691
1986-06-08 08:53:07 A 20 58 12.36 +10 47 28.6 B 691
1986-06-10 06:54:50 A 21 01 56.99 +11 00 47.6 A 801
1986-07-08 07:22:52 A 22 16 17.63 +10 39 46.4 A 801
1986-07-10 07:50:26 A 22 24 36.24 +10 07 31.5 A 801
1986-07-10 08:52:16 A 22 24 48.13 +10 06 49.1 B 691
1986-07-10 09:16:33 A 22 24 52.32 +10 06 32.0 B 691
1986-07-10 09:25:51 A 22 24 53.91 +10 06 25.1 B 691
1986-08-01 08:39:29 A 01 20 01.54 -09 36 05.1 688
1986-08-01 08:49:30 A 01 20 07.16 -09 36 43.1 688
1987-02-22 22:52:15 A 09 49 16.78 +32 30 11.8 054
1987-02-22 23:17:15 A 09 49 15.07 +32 30 35.3 054
1987-02-23 07:40:44 A 09 48 40.78 +32 38 39.6 675
1987-02-23 08:26:14 A 09 48 37.65 +32 39 22.1 675
1987-02-23 23:15:51 A 09 47 39.01 +32 52 51.6 054
1987-02-27 08:07:06 A 09 42 32.90 +34 00 18.6 A 801
1989-02-11 12:00:00 15 02 24.62 +07 59 29.6 c 261
1989-02-11 13:30:00 15 02 28.25 +08 00 12.9 c 261
1991-05-13 07:31:31 A 20 06 03.54 +07 02 34.6 801
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)