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
2014-06-14 04:06:40 C 13 47 36.10 +23 25 11.2 u H21
2014-06-14 04:12:28 C 13 47 36.01 +23 25 07.1 u H21
2014-06-15 04:10:55 C 13 47 21.64 +23 09 28.5 u H21
2014-06-15 04:13:33 C 13 47 21.58 +23 09 26.1 u H21
2014-06-15 04:15:50 C 13 47 21.56 +23 09 24.9 u H21
2014-06-15 04:18:39 C 13 47 21.55 +23 09 22.8 u H21
2014-06-18 03:35:11 C 13 46 52.69 +22 21 39.2 u H21
2014-06-18 03:38:08 C 13 46 52.67 +22 21 36.9 u H21
2014-06-18 03:40:42 C 13 46 52.69 +22 21 35.0 u H21
2014-06-18 03:43:01 C 13 46 52.65 +22 21 33.2 u H21
2014-06-18 03:46:22 C 13 46 52.64 +22 21 31.5 u H21
2014-06-18 03:48:56 C 13 46 52.62 +22 21 29.5 u H21
2014-06-20 06:33:39 C 13 46 44.57 +21 46 28.7 q 703
2014-06-20 06:40:55 C 13 46 44.42 +21 46 24.5 q 703
2014-06-20 06:48:13 C 13 46 44.41 +21 46 19.3 q 703
2014-06-20 06:55:31 C 13 46 44.45 +21 46 14.1 q 703
2014-06-27 02:31:12 C 13 47 26.87 +19 48 25.9 u H21
2014-06-27 02:36:00 C 13 47 26.91 +19 48 22.5 u H21
2014-06-27 02:40:29 C 13 47 26.94 +19 48 19.1 u H21
2014-06-27 02:44:59 C 13 47 26.97 +19 48 15.7 u H21
2014-07-02 06:08:12 C 13 49 03.23 +18 15 30.5 q G96
2014-07-02 06:15:43 C 13 49 03.35 +18 15 24.6 q G96
2014-07-02 06:23:15 C 13 49 03.46 +18 15 18.9 q G96
2014-07-10 03:02:42 C 13 53 08.22 +15 48 56.3 u H21
2014-07-10 03:08:11 C 13 53 08.35 +15 48 52.2 u H21
2014-07-10 03:14:30 C 13 53 08.52 +15 48 46.8 u H21
2014-07-10 03:20:19 C 13 53 08.65 +15 48 42.2 u H21
2014-07-10 03:24:48 C 13 53 08.79 +15 48 38.7 u H21
2016-04-07 02:52:42 C 19 12 46.88 +00 26 40.1 q 160
2016-04-07 02:55:29 C 19 12 47.16 +00 26 41.4 q 160
2016-04-20 01:31:11 C 19 37 34.88 +02 22 12.4 q 160
2016-04-20 01:33:23 C 19 37 35.10 +02 22 13.8 q 160
2016-04-20 01:35:11 C 19 37 35.23 +02 22 14.3 q 160
2016-05-06 01:14:42 C 20 07 56.53 +04 56 58.0 q 160
2016-05-06 01:16:38 C 20 07 56.63 +04 56 59.1 q 160
2016-05-06 01:18:35 C 20 07 56.82 +04 56 59.2 q 160
2016-05-07 01:06:00 C 20 09 50.06 +05 06 47.4 q 160
2016-05-07 01:07:55 C 20 09 50.20 +05 06 48.2 q 160
2016-05-07 01:09:53 C 20 09 50.36 +05 06 48.8 q 160
2016-05-08 08:44:25 C 20 12 20.83 +05 19 49.4 R G45
2016-05-08 08:51:53 C 20 12 21.41 +05 19 52.5 R G45
2016-05-08 08:59:21 C 20 12 21.99 +05 19 55.6 R G45
2016-05-08 09:06:52 C 20 12 22.60 +05 19 58.1 R G45
2016-05-08 09:07:39 C 20 12 22.65 +05 19 58.4 R G45
2016-05-08 09:14:12 C 20 12 23.15 +05 20 01.4 R G45
2016-05-12 13:12:08 C 20 20 21.277 +06 01 02.21 L F51
2016-05-12 13:29:37 C 20 20 22.636 +06 01 09.41 L F51
2016-05-12 13:47:02 C 20 20 23.991 +06 01 16.55 L F51
2016-05-12 14:04:29 C 20 20 25.343 +06 01 23.72 L F51
2016-05-17 13:52:35 C 20 30 04.89 +06 49 49.9 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)