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
2004-04-14 08:09:53 C 14 53 44.26 +26 04 38.1 18.5 c 704
2004-04-15 09:28:56 C 14 52 12.25 +26 19 52.6 r H41
2004-04-15 09:31:31 C 14 52 12.15 +26 19 53.4 r H41
2004-04-15 09:35:52 C 14 52 11.86 +26 19 56.7 r H41
2004-04-16 00:07:52 C 14 51 18.50 +26 28 25.1 o 084
2004-04-16 07:56:08 C 14 50 49.32 +26 32 58.3 17.5 d H72
2004-04-16 08:00:48 C 14 50 49.07 +26 33 01.7 17.1 d H72
2004-04-16 08:05:28 C 14 50 48.87 +26 33 04.9 17.9 d H72
2004-04-16 08:10:08 C 14 50 48.44 +26 33 06.9 17.6 d H72
2004-04-16 08:35:27 C 14 50 46.92 +26 33 20.5 r H41
2004-04-16 08:38:03 C 14 50 46.83 +26 33 22.5 r H41
2004-04-16 08:43:02 C 14 50 46.49 +26 33 24.5 r H41
2004-04-16 08:49:47 C 14 50 46.08 +26 33 28.0 r H41
2004-04-16 23:36:52 C 14 49 50.71 +26 41 46.6 o 084
2004-04-17 23:08:24 C 14 48 21.24 +26 54 38.5 o 084
2004-04-18 08:41:53 C 14 47 44.23 +26 59 46.5 r H41
2004-04-18 08:44:34 C 14 47 44.14 +26 59 47.7 r H41
2004-04-18 08:47:54 C 14 47 43.94 +26 59 48.9 r H41
2004-04-18 08:51:40 C 14 47 43.57 +26 59 52.7 r H41
2004-04-18 23:47:34 C 14 46 45.83 +27 07 34.3 o 084
2004-04-22 08:41:13 C 14 41 23.660 +27 45 43.26 e 645
2004-04-22 08:46:13 C 14 41 23.318 +27 45 45.36 18.52 e 645
2004-04-22 21:51:39 C 14 40 30.28 +27 51 13.8 o 084
2004-04-23 21:14:42 C 14 38 54.71 +28 00 37.4 o 084
2004-04-24 21:47:54 C 14 37 13.53 +28 09 51.8 o 084
2004-04-25 21:23:22 C 14 35 35.85 +28 18 05.1 o 084
2004-04-26 07:48:49 C 14 34 52.40 +28 21 36.1 d 703
2004-04-26 08:02:02 C 14 34 51.41 +28 21 39.8 d 703
2004-04-26 08:15:27 C 14 34 50.40 +28 21 43.9 d 703
2004-04-26 08:28:46 C 14 34 49.53 +28 21 49.2 d 703
2004-04-26 21:28:56 C 14 33 55.62 +28 25 50.8 o 084
2004-04-27 07:31:31 C 14 33 13.55 +28 28 56.7 r H41
2004-04-27 07:38:51 C 14 33 13.03 +28 28 59.0 r H41
2004-04-27 07:41:27 C 14 33 12.84 +28 28 59.7 r H41
2004-04-27 07:44:04 C 14 33 12.66 +28 29 00.0 r H41
2004-04-27 07:48:45 C 14 33 12.31 +28 29 02.1 r H41
2004-05-02 05:50:58 C 14 25 01.33 +28 56 04.7 17.6 c 704
2004-05-02 06:04:44 C 14 25 00.34 +28 56 06.8 18.0 c 704
2004-05-02 06:18:29 C 14 24 59.34 +28 56 08.8 17.9 c 704
2004-05-02 06:34:56 C 14 24 58.17 +28 56 12.3 18.1 c 704
2004-05-02 06:48:58 C 14 24 57.19 +28 56 14.6 18.2 c 704
2004-05-06 05:53:23 C 14 18 29.43 +29 06 15.3 r H41
2004-05-06 05:57:08 C 14 18 29.18 +29 06 17.1 r H41
2004-05-06 05:59:21 C 14 18 29.16 +29 06 16.5 r H41
2004-05-06 06:02:14 C 14 18 28.88 +29 06 14.9 r H41
2004-05-07 05:39:27 C 14 16 54.75 +29 07 09.1 r H41
2004-05-07 05:43:17 C 14 16 54.53 +29 07 08.9 r H41
2004-05-07 05:45:44 C 14 16 54.32 +29 07 08.9 r H41
2004-05-07 05:48:13 C 14 16 54.15 +29 07 09.2 r H41
2004-05-07 21:56:02 C 14 15 50.46 +29 07 20.5 o 084
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)