1620 Geographos (1951 RA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3355121545 ± 2.00e+00
Semi-major axis (a)1.2457769668 AU ± 3.00e+00
Inclination (i)13.33577542° ± 4.00e+00
Long. of Asc. Node (Ω)337.14082621° ± 5.00e+00
Arg. of Perihelion (ω)277.01835526° ± 6.00e+00
Mean Anomaly (M)212.92032873° ± 2.36e-05
Mean Motion (n)0.7088458984°/day ± 2.56e+00
Perihelion dist (q)0.82780365 AU ± 3.19e+00
Aphelion dist (Q)1.66375028 AU ± 4.72e+00
Orbital Period1.39046623 yr ± 5.02e+00
NGA Modelr2
A23.55475120e-06 AU/d²
Physical Parameters
H (abs. magnitude)15.26
G (slope)0.15
Alternative Designations

1983 CY3

Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.276″
Uncertainty0
Orbit TypeApollo
MOID0.028806 AU
Observations Used9056
Radar Obs Used5
Gaia Obs Used104
Oppositions19
Arc Total1951-2017
First Observation Used1951-08-31
Last Observation Used2026-04-08
Observations (11927)
Date Type RA Dec Mag Band Observatory
2021-12-24 02:03:54 S 12 33 56.146 +03 24 07.88 V C57
2021-12-24 02:03:54 s 1 -29581.767 0 +384665.86 2740.0 C57
2021-12-24 02:13:54 S 12 33 57.245 +03 23 58.42 V C57
2021-12-24 02:13:54 s 1 -29936.055 0 +384584.42 3340.0 C57
2021-12-24 02:23:54 S 12 33 58.229 +03 23 46.46 V C57
2021-12-24 02:23:54 s 1 -30290.269 0 +384502.02 3380.0 C57
2021-12-24 02:33:54 S 12 33 59.618 +03 23 34.62 V C57
2021-12-24 02:33:54 s 1 -30644.409 0 +384418.66 2860.0 C57
2021-12-24 02:43:54 S 12 34 00.763 +03 23 23.39 V C57
2021-12-24 02:43:54 s 1 -30998.474 0 +384334.34 1770.0 C57
2021-12-24 02:53:54 S 12 34 02.014 +03 23 11.54 V C57
2021-12-24 02:53:54 s 1 -31352.463 0 +384249.06 120.0 C57
2021-12-24 03:03:54 S 12 34 03.218 +03 23 00.35 V C57
2021-12-24 03:03:54 s 1 -31706.375 0 +384162.82 7890.0 C57
2021-12-24 03:13:54 S 12 34 04.188 +03 22 48.97 V C57
2021-12-24 03:13:54 s 1 -32060.210 0 +384075.63 5080.0 C57
2021-12-24 03:23:54 S 12 34 05.604 +03 22 36.05 V C57
2021-12-24 03:23:54 s 1 -32413.965 0 +383987.47 1690.0 C57
2021-12-24 03:33:54 S 12 34 06.902 +03 22 25.50 V C57
2021-12-24 03:33:54 s 1 -32767.640 0 +383898.36 7710.0 C57
2021-12-24 04:43:54 S 12 34 15.067 +03 21 01.69 V C57
2021-12-24 04:43:54 s 1 -35241.056 0 +383247.69 3130.0 C57
2021-12-24 04:53:54 S 12 34 16.313 +03 20 52.48 V C57
2021-12-24 04:53:54 s 1 -35594.059 0 +383150.89 4320.0 C57
2021-12-24 05:03:54 S 12 34 17.566 +03 20 40.31 V C57
2021-12-24 05:03:54 s 1 -35946.974 0 +383053.14 4880.0 C57
2021-12-24 05:13:54 S 12 34 18.595 +03 20 29.69 V C57
2021-12-24 05:13:54 s 1 -36299.801 0 +382954.42 4820.0 C57
2021-12-24 05:23:54 S 12 34 19.870 +03 20 18.56 V C57
2021-12-24 05:23:54 s 1 -36652.536 0 +382854.74 4130.0 C57
2021-12-24 05:33:54 S 12 34 20.983 +03 20 03.55 V C57
2021-12-24 05:33:54 s 1 -37005.181 0 +382754.11 2810.0 C57
2021-12-24 05:43:54 S 12 34 22.135 +03 19 53.94 V C57
2021-12-24 05:43:54 s 1 -37357.734 0 +382652.51 840.0 C57
2021-12-24 05:53:54 S 12 34 23.417 +03 19 45.59 V C57
2021-12-24 05:53:54 s 1 -37710.194 0 +382549.95 8230.0 C57
2021-12-24 06:03:54 S 12 34 24.401 +03 19 34.21 V C57
2021-12-24 06:03:54 s 1 -38062.560 0 +382446.43 4980.0 C57
2021-12-24 06:13:54 S 12 34 25.834 +03 19 24.53 V C57
2021-12-24 06:13:54 s 1 -38414.831 0 +382341.94 1070.0 C57
2021-12-24 06:23:54 S 12 34 26.952 +03 19 11.42 V C57
2021-12-24 06:23:54 s 1 -38767.007 0 +382236.50 6510.0 C57
2021-12-24 07:03:54 S 12 34 31.622 +03 18 20.30 V C57
2021-12-24 07:03:54 s 1 -40174.731 0 +381805.09 1620.0 C57
2021-12-24 07:23:54 S 12 34 34.025 +03 17 59.68 V C57
2021-12-24 07:23:54 s 1 -40877.994 0 +381583.61 5140.0 C57
2021-12-24 07:33:54 S 12 34 35.215 +03 17 46.46 V C57
2021-12-24 07:33:54 s 1 -41229.472 0 +381471.43 5880.0 C57
2021-12-24 07:43:54 S 12 34 36.550 +03 17 35.45 V C57
2021-12-24 07:43:54 s 1 -41580.847 0 +381358.28 5920.0 C57
Radar Observations (12)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1983-02-27 05:00:00 161795 5 Hz 2380 -1 -1
1983-02-27.208333 16179500 500 Hz 2380 251 251
1983-02-28 05:04:00 142007628 30 us 2380 -1 -1
1983-02-28.211111 14200762800 30000 us 2380 251 251
1994-08-28 07:10:00 38936537.06 1.76 us 8510 -14 -14
1994-08-28 07:10:00 -364880.593 0.9 Hz 8510 -14 -14
1994-08-28.298611 3893653706 1760 us 8510 253 253
1994-08-29 04:40:00 42596456.4 1.13 us 8510 -14 -14
1994-08-29 04:40:00 -427851.027 0.2 Hz 8510 -14 -14
1994-08-29.194444 4259645640 1130 us 8510 253 253
1994-09-02 07:20:00 -615553.2 0.5 Hz 8510 -14 -14
1994-09-02.305556 -61555320 50 Hz 8510 253 253
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)