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
2016-06-07 01:29:08 C 21 12 43.19 +09 45 12.4 q 160
2016-06-08 09:35:40 C 21 15 48.02 +09 54 15.4 q 703
2016-06-08 09:44:21 C 21 15 48.83 +09 54 17.9 q 703
2016-06-08 09:53:03 C 21 15 49.65 +09 54 20.6 q 703
2016-06-08 10:01:44 C 21 15 50.48 +09 54 22.6 q 703
2016-06-11 01:32:24 C 21 22 06.78 +10 10 45.6 o Z22
2016-06-11 01:43:25 C 21 22 07.87 +10 10 48.4 o Z22
2016-06-12 19:20:04 C 21 26 22.05 +10 20 23.4 q D29
2016-06-12 19:40:26 C 21 26 24.08 +10 20 27.9 q D29
2016-06-12 20:00:48 C 21 26 26.10 +10 20 32.4 q D29
2016-06-13 08:08:37 C 21 27 42.39 +10 23 07.8 R G45
2016-06-13 08:09:29 C 21 27 42.48 +10 23 07.9 R G45
2016-06-13 08:16:31 C 21 27 43.20 +10 23 09.5 R G45
2016-06-13 08:17:18 C 21 27 43.28 +10 23 09.7 R G45
2016-06-13 08:24:49 C 21 27 44.05 +10 23 11.2 R G45
2016-06-13 08:25:35 C 21 27 44.11 +10 23 11.5 R G45
2016-06-13 08:32:49 C 21 27 44.86 +10 23 13.1 R G45
2016-06-13 08:40:35 C 21 27 45.64 +10 23 14.6 R G45
2016-06-13 08:41:33 C 21 27 45.73 +10 23 14.6 R G45
2016-06-14 10:23:00 C 21 30 28.00 +10 28 28.6 q 703
2016-06-14 10:31:39 C 21 30 28.93 +10 28 29.7 q 703
2016-06-14 10:40:19 C 21 30 29.78 +10 28 31.5 q 703
2016-06-14 10:48:59 C 21 30 30.71 +10 28 33.3 q 703
2016-06-18 00:12:14 C 21 39 55.97 +10 42 36.0 q 160
2016-06-18 00:14:46 C 21 39 56.23 +10 42 36.4 q 160
2016-06-18 00:17:16 C 21 39 56.52 +10 42 36.9 q 160
2016-06-18 00:46:55 C 21 39 59.83 +10 42 40.8 u 104
2016-06-18 00:52:14 C 21 40 00.40 +10 42 41.9 u 104
2016-06-18 00:57:32 C 21 40 00.99 +10 42 42.7 u 104
2016-06-18 07:57:38 C 21 40 49.12 +10 43 38.8 u H21
2016-06-18 07:59:36 C 21 40 49.33 +10 43 39.0 u H21
2016-06-18 08:01:33 C 21 40 49.55 +10 43 39.4 u H21
2016-06-18 08:03:31 C 21 40 49.77 +10 43 39.6 u H21
2016-06-18 08:05:29 C 21 40 49.98 +10 43 39.9 u H21
2016-06-18 08:07:26 C 21 40 50.21 +10 43 40.1 u H21
2016-06-18 08:09:24 C 21 40 50.43 +10 43 40.2 u H21
2016-06-18 08:11:21 C 21 40 50.65 +10 43 40.8 u H21
2016-06-18 08:13:19 C 21 40 50.86 +10 43 40.9 u H21
2016-06-18 08:15:16 C 21 40 51.07 +10 43 41.1 u H21
2016-06-18 08:17:13 C 21 40 51.31 +10 43 41.4 u H21
2016-06-18 08:19:10 C 21 40 51.51 +10 43 41.7 u H21
2016-06-18 08:21:07 C 21 40 51.72 +10 43 41.9 u H21
2016-06-18 08:24:15 C 21 40 52.08 +10 43 42.4 u H21
2016-06-18 09:52:31 C 21 41 02.26 +10 43 55.8 u 926
2016-06-18 09:59:42 C 21 41 03.07 +10 43 56.7 u 926
2016-06-18 10:06:55 C 21 41 03.72 +10 43 57.9 u 926
2016-06-19 12:19:05 C 21 44 07.518 +10 47 02.33 L F51
2016-06-19 12:35:22 C 21 44 09.369 +10 47 04.18 L F51
2016-06-19 12:51:40 C 21 44 11.216 +10 47 05.91 L F51
2016-06-19 12:57:24 C 21 44 11.88 +10 47 06.6 L T05
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)