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
2021-07-29 14:25:05 C 02 15 13.42 -02 56 37.0 V T08
2021-07-29 14:32:28 C 02 15 16.38 -02 56 51.4 V T08
2021-07-29 14:49:08 C 02 15 23.04 -02 57 23.3 V T08
2021-07-31 00:53:02 C 02 29 22.86 -04 03 12.3 V 089
2021-07-31 00:56:21 C 02 29 24.22 -04 03 19.1 V 089
2021-07-31 00:59:39 C 02 29 25.57 -04 03 24.9 V 089
2021-07-31 01:02:57 C 02 29 26.87 -04 03 31.3 V 089
2021-07-31 01:06:15 C 02 29 28.23 -04 03 37.6 V 089
2021-07-31 01:09:33 C 02 29 29.57 -04 03 44.2 V 089
2021-07-31 01:19:27 C 02 29 33.60 -04 04 03.4 V 089
2021-07-31 01:22:45 C 02 29 34.95 -04 04 09.5 V 089
2021-07-31 13:58:22 C 02 34 46.26 -04 28 07.1 V T05
2021-07-31 14:09:30 C 02 34 50.75 -04 28 28.7 V T05
2021-07-31 14:37:47 C 02 35 02.14 -04 29 23.1 V T05
2021-07-31 18:40:50 S 02 36 39.826 -04 36 56.88 L C51
2021-08-01 00:54:44 C 02 39 16.17 -04 49 16.8 V 089
2021-08-01 00:58:02 C 02 39 17.52 -04 49 23.4 V 089
2021-08-01 01:01:20 C 02 39 18.85 -04 49 29.8 V 089
2021-08-01 01:04:38 C 02 39 20.19 -04 49 36.4 V 089
2021-08-01 01:07:56 C 02 39 21.53 -04 49 42.7 V 089
2021-08-01 01:11:14 C 02 39 22.86 -04 49 48.8 V 089
2021-08-01 01:14:32 C 02 39 24.21 -04 49 55.3 V 089
2021-08-01 01:17:50 C 02 39 25.54 -04 50 01.2 V 089
2021-08-01 01:21:08 C 02 39 26.88 -04 50 08.0 V 089
2021-08-01 01:24:26 C 02 39 28.21 -04 50 13.7 V 089
2021-08-01 16:38:52 S 02 45 41.808 -05 18 48.53 L C51
2021-08-01 19:47:11 S 02 46 59.129 -05 24 45.29 L C51
2021-08-01 22:55:19 S 02 48 16.334 -05 30 41.08 L C51
2021-08-02 02:03:38 S 02 49 33.569 -05 36 36.36 L C51
2021-08-02 03:37:42 S 02 50 12.134 -05 39 33.70 L C51
2021-08-02 03:37:53 S 02 50 12.242 -05 39 33.62 L C51
2021-08-02 05:11:57 S 02 50 50.770 -05 42 30.92 L C51
2021-08-02 06:46:01 S 02 51 29.306 -05 45 27.86 L C51
2021-08-02 08:20:16 S 02 52 07.920 -05 48 24.48 L C51
2021-08-02 13:01:55 S 02 54 03.168 -05 57 14.40 L C51
2021-08-02 14:13:38 C 02 54 35.02 -05 59 39.1 V T08
2021-08-02 14:45:18 C 02 54 47.69 -06 00 38.5 V T08
2021-08-02 14:51:39 C 02 54 50.22 -06 00 50.4 V T08
2021-08-04 01:10:10 C 03 08 47.38 -07 04 11.5 V 089
2021-08-04 01:13:29 C 03 08 48.72 -07 04 17.7 V 089
2021-08-04 01:16:47 C 03 08 49.99 -07 04 22.9 V 089
2021-08-04 01:20:05 C 03 08 51.32 -07 04 29.4 V 089
2021-08-04 01:23:23 C 03 08 52.66 -07 04 35.5 V 089
2021-08-04 01:26:41 C 03 08 53.98 -07 04 41.3 V 089
2021-08-06 14:24:11 C 03 33 08.59 -08 50 28.4 V T08
2021-08-06 14:45:51 C 03 33 16.87 -08 51 04.7 V T08
2021-08-06 15:00:40 C 03 33 22.52 -08 51 29.4 V T08
2021-08-06 15:06:38 C 03 33 24.81 -08 51 39.5 V T08
2021-08-08 14:27:49 C 03 51 33.95 -10 07 02.5 V T05
2021-08-08 14:28:29 C 03 51 34.19 -10 07 03.6 V 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)