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
2021-12-20 17:33:54 s 1 +132110.76 9 +310033.23 2670.0 C57
2021-12-20 17:43:54 S 11 06 06.497 -03 40 57.04 V C57
2021-12-20 17:43:54 s 1 +131838.48 1 +310436.17 5260.0 C57
2021-12-20 17:53:54 S 11 06 06.842 -03 40 50.52 V C57
2021-12-20 17:53:54 s 1 +131565.70 2 +310837.99 6080.0 C57
2021-12-20 18:03:54 S 11 06 07.466 -03 40 41.23 V C57
2021-12-20 18:03:54 s 1 +131292.43 5 +311238.67 5140.0 C57
2021-12-20 18:13:54 S 11 06 07.992 -03 40 33.31 V C57
2021-12-20 18:13:54 s 1 +131018.68 2 +311638.23 2430.0 C57
2021-12-20 18:23:54 S 11 06 08.438 -03 40 25.43 V C57
2021-12-20 18:23:54 s 1 +130744.44 4 +312036.66 7970.0 C57
2021-12-20 18:33:54 S 11 06 08.947 -03 40 18.41 V C57
2021-12-20 18:33:54 s 1 +130469.72 4 +312433.96 1760.0 C57
2021-12-20 18:43:54 S 11 06 09.451 -03 40 10.74 V C57
2021-12-20 18:43:54 s 1 +130194.52 3 +312830.13 3820.0 C57
2021-12-20 18:53:54 S 11 06 09.883 -03 40 03.58 V C57
2021-12-20 18:53:54 s 1 +129918.84 4 +313225.18 4160.0 C57
2021-12-20 19:03:54 S 11 06 10.500 -03 39 52.96 V C57
2021-12-20 19:03:54 s 1 +129642.68 8 +313619.10 2770.0 C57
2021-12-20 19:13:54 S 11 06 10.951 -03 39 46.73 V C57
2021-12-20 19:13:54 s 1 +129366.05 8 +314011.90 9670.0 C57
2021-12-20 19:23:54 S 11 06 11.537 -03 39 39.28 V C57
2021-12-20 19:23:54 s 1 +129088.95 6 +314403.58 4870.0 C57
2021-12-20 19:33:54 S 11 06 12.089 -03 39 31.93 V C57
2021-12-20 19:33:54 s 1 +128811.38 3 +314794.14 8370.0 C57
2021-12-20 19:43:54 S 11 06 12.475 -03 39 23.65 V C57
2021-12-20 19:43:54 s 1 +128533.34 1 +315183.57 180.0 C57
2021-12-20 19:53:54 S 11 06 12.859 -03 39 15.70 V C57
2021-12-20 19:53:54 s 1 +128254.83 3 +315571.89 310.0 C57
2021-12-20 20:03:54 S 11 06 13.416 -03 39 08.78 V C57
2021-12-20 20:03:54 s 1 +127975.86 0 +315959.08 8770.0 C57
2021-12-20 20:23:54 S 11 06 14.602 -03 38 54.85 V C57
2021-12-20 20:23:54 s 1 +127416.52 8 +316730.12 710.0 C57
2021-12-20 20:33:54 S 11 06 14.914 -03 38 44.95 V C57
2021-12-20 20:33:54 s 1 +127136.17 2 +317113.97 4200.0 C57
2021-12-20 20:43:54 S 11 06 15.521 -03 38 38.00 V C57
2021-12-20 20:43:54 s 1 +126855.36 0 +317496.70 6050.0 C57
2021-12-20 20:53:54 S 11 06 15.958 -03 38 28.93 V C57
2021-12-20 20:53:54 s 1 +126574.09 2 +317878.32 6260.0 C57
2021-12-20 21:03:54 S 11 06 16.394 -03 38 21.37 V C57
2021-12-20 21:03:54 s 1 +126292.37 1 +318258.82 4850.0 C57
2021-12-20 21:13:54 S 11 06 16.968 -03 38 15.04 V C57
2021-12-20 21:13:54 s 1 +126010.19 9 +318638.21 1820.0 C57
2021-12-20 21:23:54 S 11 06 17.544 -03 38 06.40 V C57
2021-12-20 21:23:54 s 1 +125727.57 7 +319016.49 7180.0 C57
2021-12-20 21:33:54 S 11 06 17.950 -03 37 58.37 V C57
2021-12-20 21:33:54 s 1 +125444.50 8 +319393.66 940.0 C57
2021-12-20 21:43:54 S 11 06 18.446 -03 37 49.48 V C57
2021-12-20 21:43:54 s 1 +125160.99 3 +319769.71 3100.0 C57
2021-12-20 21:53:54 S 11 06 18.960 -03 37 42.78 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)