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
2021-12-05 10:56:26 C 10 44 14.82 -07 42 37.7 V 703
2021-12-05 11:04:06 C 10 44 15.31 -07 42 33.7 V 703
2021-12-05 11:43:39 C 10 44 17.88 -07 42 13.1 V G96
2021-12-05 11:51:49 C 10 44 18.41 -07 42 08.8 V G96
2021-12-05 12:00:00 C 10 44 18.94 -07 42 04.6 V G96
2021-12-05 12:08:10 C 10 44 19.47 -07 42 00.3 V G96
2021-12-08 05:39:16 S 10 48 39.22 -07 06 14.6 L C51
2021-12-08 08:47:24 S 10 48 51.370 -07 04 27.95 L C51
2021-12-08 15:03:51 S 10 49 15.46 -07 00 54.6 L C51
2021-12-08 18:11:59 S 10 49 27.43 -06 59 06.7 L C51
2021-12-08 19:46:04 S 10 49 33.47 -06 58 13.5 L C51
2021-12-08 21:20:07 S 10 49 39.43 -06 57 18.8 L C51
2021-12-08 22:54:11 S 10 49 45.40 -06 56 24.3 L C51
2021-12-09 00:28:15 S 10 49 51.346 -06 55 30.14 L C51
2021-12-09 02:02:19 S 10 49 57.34 -06 54 35.8 L C51
2021-12-09 05:09:55 S 10 50 09.20 -06 52 48.4 L C51
2021-12-09 08:18:46 S 10 50 21.089 -06 50 57.62 L C51
2021-12-09 11:26:54 S 10 50 32.940 -06 49 07.93 L C51
2021-12-09 14:35:03 S 10 50 44.71 -06 47 17.8 L C51
2021-12-12 14:12:40 C 10 55 05.65 -06 03 35.7 V T08
2021-12-12 14:17:42 C 10 55 05.94 -06 03 32.5 V T08
2021-12-12 14:21:41 C 10 55 06.16 -06 03 30.0 V T08
2021-12-12 14:40:17 C 10 55 07.17 -06 03 18.4 V T08
2021-12-15 10:03:54 S 10 58 54.410 -05 21 18.04 V C57
2021-12-15 10:03:54 s 1 -160633.17 7 +42062.174 6890.0 C57
2021-12-15 10:23:54 S 10 58 55.385 -05 21 02.74 V C57
2021-12-15 10:23:54 s 1 -159974.45 4 +40186.887 5890.0 C57
2021-12-15 10:33:54 S 10 58 55.654 -05 20 55.79 V C57
2021-12-15 10:33:54 s 1 -159639.01 1 +39247.701 4820.0 C57
2021-12-15 10:43:54 S 10 58 56.210 -05 20 49.02 V C57
2021-12-15 10:43:54 s 1 -159299.47 1 +38307.506 6540.0 C57
2021-12-15 10:53:54 S 10 58 56.669 -05 20 41.60 V C57
2021-12-15 10:53:54 s 1 -158955.80 5 +37366.316 930.0 C57
2021-12-15 11:03:54 S 10 58 57.060 -05 20 32.46 V C57
2021-12-15 11:03:54 s 1 -158607.98 0 +36424.146 7850.0 C57
2021-12-15 11:13:54 S 10 58 57.413 -05 20 27.02 V C57
2021-12-15 11:13:54 s 1 -158255.96 6 +35481.011 7200.0 C57
2021-12-15 11:23:54 S 10 58 57.890 -05 20 17.77 V C57
2021-12-15 11:23:54 s 1 -157899.72 9 +34536.927 8820.0 C57
2021-12-15 11:33:54 S 10 58 58.188 -05 20 09.74 V C57
2021-12-15 11:33:54 s 1 -157539.23 7 +33591.910 2600.0 C57
2021-12-15 11:43:54 S 10 58 58.714 -05 20 01.68 V C57
2021-12-15 11:43:54 s 1 -157174.45 8 +32645.976 8410.0 C57
2021-12-15 11:53:54 S 10 58 59.071 -05 19 56.35 V C57
2021-12-15 11:53:54 s 1 -156805.36 0 +31699.143 6110.0 C57
2021-12-15 12:03:54 S 10 58 59.556 -05 19 47.86 V C57
2021-12-15 12:03:54 s 1 -156431.90 8 +30751.427 5570.0 C57
2021-12-15 12:13:54 S 10 59 00.005 -05 19 39.32 V C57
2021-12-15 12:13:54 s 1 -156054.06 9 +29802.846 6660.0 C57
2021-12-15 12:23:54 S 10 59 00.449 -05 19 34.25 V C57
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)