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
2016-07-09 14:25:44 C 23 00 58.91 +09 00 49.0 L T05
2016-07-09 14:33:14 C 23 01 00.52 +09 00 43.7 L T05
2016-07-09 14:49:41 C 23 01 04.02 +09 00 31.8 L T05
2016-07-09 14:56:40 C 23 01 05.51 +09 00 26.7 L T05
2016-07-09 15:04:55 C 23 01 07.27 +09 00 20.7 L T05
2016-07-12 00:58:00 C 23 14 36.06 +08 13 09.6 q D03
2016-07-12 01:16:46 C 23 14 40.52 +08 12 52.7 q D03
2016-07-12 01:35:33 C 23 14 45.01 +08 12 35.7 q D03
2016-07-14 09:17:28 C 23 29 02.79 +07 16 16.6 q 703
2016-07-14 09:23:58 C 23 29 04.48 +07 16 09.4 q 703
2016-07-14 09:30:27 C 23 29 06.21 +07 16 02.5 q 703
2016-07-14 09:36:57 C 23 29 07.89 +07 15 55.0 q 703
2016-07-18 13:13:00 C 23 58 26.410 +05 03 21.05 L F51
2016-07-18 13:30:25 C 23 58 31.787 +05 02 54.17 L F51
2016-07-18 13:47:52 C 23 58 37.264 +05 02 26.80 L F51
2016-07-18 14:05:21 C 23 58 42.643 +05 01 59.78 L F51
2016-07-20 00:04:41 C 00 09 57.65 +04 05 59.6 q 160
2016-07-20 00:07:16 C 00 09 58.51 +04 05 55.1 q 160
2016-07-20 00:09:50 C 00 09 59.37 +04 05 50.8 q 160
2016-07-21 00:04:20 C 00 18 17.01 +03 23 16.2 q 160
2016-07-21 00:06:48 C 00 18 17.86 +03 23 11.4 q 160
2016-07-21 00:08:50 C 00 18 18.60 +03 23 07.4 q 160
2016-07-22 13:32:19 C 00 31 55.76 +02 11 10.9 L T05
2016-07-22 14:17:10 C 00 32 12.13 +02 09 40.3 L T05
2016-07-22 14:35:27 C 00 32 18.80 +02 09 03.2 L T05
2016-07-22 15:03:36 C 00 32 29.07 +02 08 06.3 L T05
2016-08-01 13:59:55 C 02 16 26.94 -07 39 20.0 L T05
2016-08-01 14:17:00 C 02 16 34.86 -07 40 05.4 L T05
2016-08-01 14:34:02 C 02 16 42.77 -07 40 50.8 L T05
2016-08-01 14:51:09 C 02 16 50.70 -07 41 36.2 L T05
2016-08-02 14:16:31 C 02 28 00.95 -08 43 15.8 L T05
2016-08-02 14:32:54 C 02 28 08.58 -08 43 58.8 L T05
2016-08-02 14:49:23 C 02 28 16.25 -08 44 42.1 L T05
2016-08-02 15:06:27 C 02 28 24.19 -08 45 26.8 L T05
2016-08-03 14:14:49 C 02 39 27.67 -09 45 16.4 L T05
2016-08-03 14:31:13 C 02 39 35.32 -09 45 58.5 L T05
2016-08-03 14:47:35 C 02 39 42.93 -09 46 40.6 L T05
2016-08-03 15:04:01 C 02 39 50.57 -09 47 22.8 L T05
2016-08-07 10:12:40 S 03 22 40.327 -13 24 35.64 L C51
2016-08-07 13:21:22 S 03 24 06.830 -13 31 26.44 L C51
2016-08-07 16:30:03 S 03 25 33.130 -13 38 14.28 L C51
2016-08-07 18:04:28 S 03 26 16.243 -13 41 36.92 L C51
2016-08-07 19:38:44 S 03 26 59.220 -13 44 58.99 L C51
2016-08-07 21:13:10 S 03 27 42.233 -13 48 20.05 L C51
2016-08-07 22:47:36 S 03 28 25.193 -13 51 40.54 L C51
2016-08-08 03:30:43 S 03 30 33.636 -14 01 37.02 L C51
2016-12-01 09:55:52 C 10 31 59.24 -10 23 46.2 R G45
2016-12-01 10:04:22 C 10 31 59.80 -10 23 41.9 R G45
2016-12-01 10:11:34 C 10 32 00.29 -10 23 38.2 R G45
2016-12-01 10:25:49 C 10 32 01.24 -10 23 30.5 R G45
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)