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 21:53:54 s 1 +124877.03 4 +320144.66 3670.0 C57
2021-12-20 22:03:54 S 11 06 19.519 -03 37 34.00 V C57
2021-12-20 22:03:54 s 1 +124592.63 3 +320518.50 2670.0 C57
2021-12-20 22:13:54 S 11 06 19.908 -03 37 27.23 V C57
2021-12-20 22:13:54 s 1 +124307.79 1 +320891.24 90.0 C57
2021-12-20 22:23:54 S 11 06 20.450 -03 37 19.31 V C57
2021-12-20 22:23:54 s 1 +124022.51 2 +321262.87 5940.0 C57
2021-12-20 22:33:54 S 11 06 20.779 -03 37 12.86 V C57
2021-12-20 22:33:54 s 1 +123736.79 6 +321633.39 230.0 C57
2021-12-20 22:43:54 S 11 06 21.389 -03 37 03.97 V C57
2021-12-20 22:43:54 s 1 +123450.64 5 +322002.80 2980.0 C57
2021-12-20 22:53:54 S 11 06 21.919 -03 36 56.23 V C57
2021-12-20 22:53:54 s 1 +123164.06 1 +322371.12 4180.0 C57
2021-12-20 23:03:54 S 11 06 22.538 -03 36 47.34 V C57
2021-12-20 23:03:54 s 1 +122877.04 6 +322738.33 3840.0 C57
2021-12-20 23:13:54 S 11 06 22.997 -03 36 40.32 V C57
2021-12-20 23:13:54 s 1 +122589.60 2 +323104.44 1970.0 C57
2021-12-20 23:23:54 S 11 06 23.546 -03 36 31.36 V C57
2021-12-20 23:23:54 s 1 +122301.73 0 +323469.44 8590.0 C57
2021-12-20 23:33:54 S 11 06 23.794 -03 36 25.78 V C57
2021-12-20 23:33:54 s 1 +122013.43 3 +323833.35 3690.0 C57
2021-12-20 23:43:54 S 11 06 24.384 -03 36 17.93 V C57
2021-12-20 23:43:54 s 1 +121724.71 1 +324196.16 7280.0 C57
2021-12-20 23:53:54 S 11 06 24.970 -03 36 10.69 V C57
2021-12-20 23:53:54 s 1 +121435.56 8 +324557.87 9370.0 C57
2021-12-21 00:13:54 S 11 06 25.939 -03 35 54.56 V C57
2021-12-21 00:13:54 s 1 +120856.02 1 +325277.99 9070.0 C57
2021-12-21 00:23:54 S 11 06 26.486 -03 35 47.04 V C57
2021-12-21 00:23:54 s 1 +120565.62 1 +325636.41 6710.0 C57
2021-12-21 00:33:54 S 11 06 26.870 -03 35 37.90 V C57
2021-12-21 00:33:54 s 1 +120274.80 7 +325993.73 2870.0 C57
2021-12-21 00:43:54 S 11 06 27.473 -03 35 30.55 V C57
2021-12-21 00:43:54 s 1 +119983.57 9 +326349.96 7560.0 C57
2021-12-21 00:53:54 S 11 06 27.898 -03 35 23.03 V C57
2021-12-21 00:53:54 s 1 +119691.93 9 +326705.09 800.0 C57
2021-12-21 01:03:54 S 11 06 28.493 -03 35 15.18 V C57
2021-12-21 01:03:54 s 1 +119399.88 9 +327059.13 2590.0 C57
2021-12-21 01:13:54 S 11 06 28.915 -03 35 07.51 V C57
2021-12-21 01:13:54 s 1 +119107.43 2 +327412.08 2930.0 C57
2021-12-21 01:23:54 S 11 06 29.446 -03 34 58.66 V C57
2021-12-21 01:23:54 s 1 +118814.56 7 +327763.94 1840.0 C57
2021-12-21 01:33:54 S 11 06 29.952 -03 34 50.41 V C57
2021-12-21 01:33:54 s 1 +118521.29 8 +328114.71 9320.0 C57
2021-12-21 02:13:54 S 11 06 31.898 -03 34 18.84 V C57
2021-12-21 02:13:54 s 1 +117344.20 8 +329506.89 5060.0 C57
2021-12-21 02:23:54 S 11 06 32.251 -03 34 10.13 V C57
2021-12-21 02:23:54 s 1 +117048.94 0 +329852.22 5500.0 C57
2021-12-21 02:33:54 S 11 06 32.810 -03 34 04.48 V C57
2021-12-21 02:33:54 s 1 +116753.27 8 +330196.46 4540.0 C57
2021-12-21 02:43:54 S 11 06 33.334 -03 33 56.41 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)