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
2021-12-21 22:13:54 S 11 07 28.728 -03 18 30.85 V C57
2021-12-21 22:13:54 s 1 +79521.183 0 +363394.11 7500.0 C57
2021-12-21 22:23:54 S 11 07 29.232 -03 18 24.26 V C57
2021-12-21 22:23:54 s 1 +79189.095 0 +363614.03 4180.0 C57
2021-12-21 22:33:54 S 11 07 29.693 -03 18 16.56 V C57
2021-12-21 22:33:54 s 1 +78856.779 0 +363832.95 160.0 C57
2021-12-21 22:43:54 S 11 07 30.144 -03 18 08.60 V C57
2021-12-21 22:43:54 s 1 +78524.237 0 +364050.85 5440.0 C57
2021-12-21 22:53:54 S 11 07 30.564 -03 18 00.83 V C57
2021-12-21 22:53:54 s 1 +78191.469 0 +364267.75 10.0 C57
2021-12-21 23:03:54 S 11 07 31.106 -03 17 52.33 V C57
2021-12-21 23:03:54 s 1 +77858.478 0 +364483.63 3900.0 C57
2021-12-21 23:13:54 S 11 07 31.536 -03 17 44.81 V C57
2021-12-21 23:13:54 s 1 +77525.264 0 +364698.51 7100.0 C57
2021-12-21 23:23:54 S 11 07 31.999 -03 17 36.85 V C57
2021-12-21 23:23:54 s 1 +77191.829 0 +364912.38 9620.0 C57
2021-12-21 23:33:54 S 11 07 32.402 -03 17 28.18 V C57
2021-12-21 23:33:54 s 1 +76858.173 0 +365125.25 1460.0 C57
2021-12-21 23:43:54 S 11 07 32.887 -03 17 20.47 V C57
2021-12-21 23:43:54 s 1 +76524.298 0 +365337.10 2630.0 C57
2021-12-21 23:53:54 S 11 07 33.307 -03 17 13.20 V C57
2021-12-21 23:53:54 s 1 +76190.205 0 +365547.95 3120.0 C57
2021-12-22 00:03:54 S 11 07 33.794 -03 17 04.60 V C57
2021-12-22 00:03:54 s 1 +75855.895 0 +365757.80 2960.0 C57
2021-12-22 00:13:54 S 11 07 34.294 -03 16 56.82 V C57
2021-12-22 00:13:54 s 1 +75521.369 0 +365966.64 2140.0 C57
2021-12-22 00:33:54 S 11 07 35.114 -03 16 41.41 V C57
2021-12-22 00:33:54 s 1 +74851.674 0 +366381.30 8530.0 C57
2021-12-22 01:03:54 S 11 07 36.547 -03 16 16.32 V C57
2021-12-22 01:03:54 s 1 +73845.543 0 +366995.76 8310.0 C57
2021-12-22 01:13:54 S 11 07 36.982 -03 16 08.69 V C57
2021-12-22 01:13:54 s 1 +73509.746 0 +367198.58 3640.0 C57
2021-12-22 01:23:54 S 11 07 37.514 -03 16 00.01 V C57
2021-12-22 01:23:54 s 1 +73173.742 0 +367400.39 8340.0 C57
2021-12-22 01:33:54 S 11 07 37.908 -03 15 52.02 V C57
2021-12-22 01:33:54 s 1 +72837.531 0 +367601.20 2420.0 C57
2021-12-22 01:43:54 S 11 07 38.340 -03 15 44.32 V C57
2021-12-22 01:43:54 s 1 +72501.115 0 +367801.01 5880.0 C57
2021-12-22 01:53:54 S 11 07 38.765 -03 15 36.76 V C57
2021-12-22 01:53:54 s 1 +72164.494 0 +367999.82 8730.0 C57
2021-12-22 02:03:54 S 11 07 39.233 -03 15 27.65 V C57
2021-12-22 02:03:54 s 1 +71827.670 0 +368197.63 970.0 C57
2021-12-22 02:13:54 S 11 07 39.612 -03 15 20.27 V C57
2021-12-22 02:13:54 s 1 +71490.644 0 +368394.44 2610.0 C57
2021-12-22 02:23:54 S 11 07 40.243 -03 15 12.74 V C57
2021-12-22 02:23:54 s 1 +71153.417 0 +368590.25 3660.0 C57
2021-12-22 02:33:54 S 11 07 40.606 -03 15 05.51 V C57
2021-12-22 02:33:54 s 1 +70815.990 0 +368785.06 4110.0 C57
2021-12-22 02:43:54 S 11 07 41.050 -03 14 56.58 V C57
2021-12-22 02:43:54 s 1 +70478.364 0 +368978.87 3970.0 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)