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 02:43:54 s 1 +116457.22 3 +330539.61 2200.0 C57
2021-12-21 02:53:54 S 11 06 33.830 -03 33 49.46 V C57
2021-12-21 02:53:54 s 1 +116160.77 6 +330881.69 8480.0 C57
2021-12-21 03:03:54 S 11 06 34.277 -03 33 40.64 V C57
2021-12-21 03:03:54 s 1 +115863.94 0 +331222.68 3400.0 C57
2021-12-21 03:13:54 S 11 06 34.766 -03 33 33.08 V C57
2021-12-21 03:13:54 s 1 +115566.71 6 +331562.58 6960.0 C57
2021-12-21 03:16:17 C 11 05 43.91 -03 35 11.1 X K87
2021-12-21 03:19:27 C 11 05 44.05 -03 35 08.6 X K87
2021-12-21 03:22:37 C 11 05 44.19 -03 35 06.0 X K87
2021-12-21 03:23:54 S 11 06 35.208 -03 33 24.73 V C57
2021-12-21 03:23:54 s 1 +115269.10 5 +331901.41 9160.0 C57
2021-12-21 03:33:54 S 11 06 35.770 -03 33 17.06 V C57
2021-12-21 03:33:54 s 1 +114971.11 0 +332239.16 10.0 C57
2021-12-21 03:43:54 S 11 06 36.302 -03 33 09.36 V C57
2021-12-21 03:43:54 s 1 +114672.73 1 +332575.82 9520.0 C57
2021-12-21 03:53:54 S 11 06 36.787 -03 33 02.48 V C57
2021-12-21 03:53:54 s 1 +114373.97 1 +332911.41 7690.0 C57
2021-12-21 04:03:54 S 11 06 37.282 -03 32 54.67 V C57
2021-12-21 04:03:54 s 1 +114074.83 2 +333245.91 4540.0 C57
2021-12-21 04:13:54 S 11 06 37.661 -03 32 46.32 V C57
2021-12-21 04:13:54 s 1 +113775.31 4 +333579.34 60.0 C57
2021-12-21 04:23:54 S 11 06 38.203 -03 32 37.68 V C57
2021-12-21 04:23:54 s 1 +113475.41 9 +333911.69 4270.0 C57
2021-12-21 04:33:54 S 11 06 38.714 -03 32 30.01 V C57
2021-12-21 04:33:54 s 1 +113175.15 0 +334242.97 7170.0 C57
2021-12-21 04:43:54 S 11 06 39.269 -03 32 23.93 V C57
2021-12-21 04:43:54 s 1 +112874.50 7 +334573.17 8760.0 C57
2021-12-21 04:53:54 S 11 06 39.624 -03 32 14.86 V C57
2021-12-21 04:53:54 s 1 +112573.49 2 +334902.29 9070.0 C57
2021-12-21 05:03:54 S 11 06 40.114 -03 32 08.30 V C57
2021-12-21 05:03:54 s 1 +112272.10 7 +335230.35 8080.0 C57
2021-12-21 05:13:54 S 11 06 40.579 -03 31 58.98 V C57
2021-12-21 05:13:54 s 1 +111970.35 3 +335557.32 5800.0 C57
2021-12-21 05:23:54 S 11 06 41.143 -03 31 50.81 V C57
2021-12-21 05:23:54 s 1 +111668.23 3 +335883.23 2260.0 C57
2021-12-21 05:33:54 S 11 06 41.578 -03 31 43.57 V C57
2021-12-21 05:33:54 s 1 +111365.74 7 +336208.06 7440.0 C57
2021-12-21 05:43:54 S 11 06 42.130 -03 31 34.86 V C57
2021-12-21 05:43:54 s 1 +111062.89 7 +336531.82 1350.0 C57
2021-12-21 05:53:54 S 11 06 42.614 -03 31 28.09 V C57
2021-12-21 05:53:54 s 1 +110759.68 4 +336854.52 4010.0 C57
2021-12-21 06:03:54 S 11 06 43.054 -03 31 20.60 V C57
2021-12-21 06:03:54 s 1 +110456.11 1 +337176.14 5420.0 C57
2021-12-21 06:13:54 S 11 06 43.483 -03 31 12.40 V C57
2021-12-21 06:13:54 s 1 +110152.17 9 +337496.69 5580.0 C57
2021-12-21 06:23:54 S 11 06 43.997 -03 31 04.58 V C57
2021-12-21 06:23:54 s 1 +109847.88 8 +337816.18 4510.0 C57
2021-12-21 06:33:54 S 11 06 44.498 -03 30 56.59 V C57
2021-12-21 06:33:54 s 1 +109543.24 2 +338134.60 2200.0 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)