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
2021-12-21 23:03:54 S 12 27 51.223 +04 22 16.72 V C57
2021-12-21 23:03:54 s 1 +77858.223 0 +364483.80 2780.0 C57
2021-12-21 23:13:55 S 12 27 52.034 +04 22 03.43 V C57
2021-12-21 23:13:55 s 1 +77525.009 0 +364698.68 5980.0 C57
2021-12-21 23:23:54 S 12 27 53.292 +04 21 54.72 V C57
2021-12-21 23:23:54 s 1 +77191.573 0 +364912.55 8490.0 C57
2021-12-22 00:13:54 S 12 27 59.402 +04 20 56.62 V C57
2021-12-22 00:13:54 s 1 +75521.112 0 +365966.80 1010.0 C57
2021-12-22 00:23:55 S 12 28 00.374 +04 20 45.53 V C57
2021-12-22 00:23:55 s 1 +75186.372 0 +366174.63 9530.0 C57
2021-12-22 00:33:54 S 12 28 01.958 +04 20 33.72 V C57
2021-12-22 00:33:54 s 1 +74851.417 0 +366381.46 7410.0 C57
2021-12-22 01:23:54 S 12 28 07.908 +04 19 37.85 V C57
2021-12-22 01:23:54 s 1 +73173.485 0 +367400.55 7200.0 C57
2021-12-22 01:33:55 S 12 28 09.070 +04 19 28.02 V C57
2021-12-22 01:33:55 s 1 +72837.274 0 +367601.36 1280.0 C57
2021-12-22 01:43:54 S 12 28 10.322 +04 19 16.39 V C57
2021-12-22 01:43:54 s 1 +72500.857 0 +367801.17 4750.0 C57
2021-12-22 01:53:55 S 12 28 11.441 +04 19 05.88 V C57
2021-12-22 01:53:55 s 1 +72164.236 0 +367999.97 7600.0 C57
2021-12-22 02:03:54 S 12 28 12.682 +04 18 58.57 V C57
2021-12-22 02:03:54 s 1 +71827.412 0 +368197.78 9840.0 C57
2021-12-22 03:03:55 S 12 28 19.637 +04 17 48.08 V C57
2021-12-22 03:03:55 s 1 +69802.261 0 +369363.64 810.0 C57
2021-12-22 03:13:54 S 12 28 21.010 +04 17 36.28 V C57
2021-12-22 03:13:54 s 1 +69464.045 0 +369554.45 8940.0 C57
2021-12-22 03:23:55 S 12 28 22.291 +04 17 23.96 V C57
2021-12-22 03:23:55 s 1 +69125.635 0 +369744.27 6490.0 C57
2021-12-22 03:33:54 S 12 28 23.386 +04 17 11.40 V C57
2021-12-22 03:33:54 s 1 +68787.032 0 +369933.09 3480.0 C57
2021-12-22 03:43:55 S 12 28 24.542 +04 17 01.46 V C57
2021-12-22 03:43:55 s 1 +68448.236 0 +370120.92 9910.0 C57
2021-12-22 03:53:54 S 12 28 25.632 +04 16 51.10 V C57
2021-12-22 03:53:54 s 1 +68109.250 0 +370307.75 5780.0 C57
2021-12-22 04:03:54 S 12 28 27.041 +04 16 40.44 V C57
2021-12-22 04:03:54 s 1 +67770.074 0 +370493.58 1100.0 C57
2021-12-22 04:13:54 S 12 28 28.104 +04 16 28.74 V C57
2021-12-22 04:13:54 s 1 +67430.708 0 +370678.42 5870.0 C57
2021-12-22 04:23:54 S 12 28 29.376 +04 16 15.38 V C57
2021-12-22 04:23:54 s 1 +67091.155 0 +370862.26 100.0 C57
2021-12-22 05:23:54 S 12 28 36.533 +04 15 07.42 V C57
2021-12-22 05:23:54 s 1 +65049.956 0 +371944.46 4320.0 C57
2021-12-22 05:33:54 S 12 28 37.894 +04 14 54.56 V C57
2021-12-22 05:33:54 s 1 +64709.119 0 +372121.35 4870.0 C57
2021-12-22 05:43:54 S 12 28 38.981 +04 14 43.73 V C57
2021-12-22 05:43:54 s 1 +64368.103 0 +372297.25 4920.0 C57
2021-12-22 05:53:54 S 12 28 40.046 +04 14 36.17 V C57
2021-12-22 05:53:54 s 1 +64026.909 0 +372472.16 4470.0 C57
2021-12-22 06:03:55 S 12 28 41.412 +04 14 27.49 V C57
2021-12-22 06:03:55 s 1 +63685.538 0 +372646.08 3510.0 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)