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
2004-05-17 21:22:47 C 14 01 26.69 +28 38 16.7 r A16
2004-05-17 21:25:31 C 14 01 26.42 +28 38 15.1 o 084
2004-05-19 05:11:42 C 13 59 46.31 +28 30 07.4 d 703
2004-05-19 05:26:31 C 13 59 45.39 +28 30 02.6 d 703
2004-05-19 05:41:19 C 13 59 44.76 +28 29 59.4 d 703
2004-05-19 05:50:22 C 13 59 44.03 +28 29 56.5 r H41
2004-05-19 05:52:54 C 13 59 43.90 +28 29 55.7 r H41
2004-05-19 05:55:19 C 13 59 43.76 +28 29 55.0 r H41
2004-05-19 05:57:51 C 13 59 43.63 +28 29 54.2 r H41
2004-05-19 05:58:30 C 13 59 43.75 +28 29 55.1 d 703
2004-05-19 06:00:21 C 13 59 43.50 +28 29 53.5 r H41
2004-05-20 05:53:59 C 13 58 30.70 +28 23 06.8 r H41
2004-05-20 05:56:26 C 13 58 30.58 +28 23 05.7 r H41
2004-05-20 05:58:52 C 13 58 30.41 +28 23 04.9 r H41
2004-05-20 06:01:22 C 13 58 30.39 +28 23 04.9 r H41
2004-05-20 21:59:08 C 13 57 43.05 +28 18 12.6 o 084
2004-05-21 05:53:24 C 13 57 19.98 +28 15 46.8 r H41
2004-05-21 06:01:20 C 13 57 19.55 +28 15 44.3 r H41
2004-05-21 06:03:47 C 13 57 19.39 +28 15 43.9 r H41
2004-05-21 06:06:12 C 13 57 19.30 +28 15 43.1 r H41
2004-05-21 21:41:51 C 13 56 34.65 +28 10 38.2 o 084
2004-05-21 22:50:34 C 13 56 31.33 +28 10 15.2 o 084
2004-05-22 07:26:04 C 13 56 07.053 +28 07 26.24 e 645
2004-05-22 07:31:04 C 13 56 06.815 +28 07 24.52 18.86 e 645
2004-05-22 22:03:10 C 13 55 26.75 +28 02 21.2 o 084
2004-05-23 07:11:58 C 13 55 01.810 +27 59 10.79 e 645
2004-05-23 07:16:58 C 13 55 01.579 +27 59 08.97 18.79 e 645
2004-05-23 21:59:37 C 13 54 22.52 +27 53 45.2 o 084
2004-05-23 22:06:43 C 13 54 22.20 +27 53 42.8 o 084
2004-05-24 20:59:04 C 13 53 23.30 +27 45 04.7 r 240
2004-05-24 21:02:58 C 13 53 23.12 +27 45 03.2 r 240
2004-05-24 21:03:35 C 13 53 23.10 +27 45 04.7 c 434
2004-05-24 21:06:16 C 13 53 23.03 +27 45 02.9 c 434
2004-05-24 21:06:52 C 13 53 22.94 +27 45 01.6 r 240
2004-05-24 21:08:44 C 13 53 22.88 +27 45 02.2 c 434
2004-05-24 21:09:27 C 13 53 22.83 +27 45 00.7 r 240
2004-05-24 21:15:57 C 13 53 22.53 +27 44 58.2 r 240
2004-05-24 22:05:50 C 13 53 20.31 +27 44 37.3 o 084
2004-05-25 23:31:12 C 13 52 17.32 +27 34 32.0 r A41
2004-05-25 23:55:48 C 13 52 16.27 +27 34 21.3 r A41
2004-05-26 00:20:13 C 13 52 15.25 +27 34 11.2 r A41
2004-05-27 05:33:31 C 13 51 06.62 +27 21 59.4 r H41
2004-05-27 05:38:42 C 13 51 06.50 +27 21 57.2 r H41
2004-05-27 05:41:09 C 13 51 06.37 +27 21 55.6 r H41
2004-06-06 21:10:24 C 13 43 47.69 +25 11 32.5 r 185
2004-06-06 21:17:53 C 13 43 47.52 +25 11 28.4 r 185
2004-06-06 21:26:39 C 13 43 47.38 +25 11 22.7 r 185
2004-06-06 21:37:52 C 13 43 47.12 +25 11 16.1 r 185
2004-06-07 04:12:27 C 13 43 39.67 +25 07 27.4 r H41
2004-06-09 05:29:11 C 13 42 49.52 +24 38 07.9 18.4 c 704
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)