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
2021-11-24 23:03:56 S 11 17 08.875 +14 24 08.35 V C57
2021-11-24 23:03:56 s 1 +81015.380 0 +358472.78 9180.0 C57
2021-11-24 23:13:56 S 11 17 09.847 +14 23 54.02 V C57
2021-11-24 23:13:56 s 1 +80685.251 0 +358687.39 2730.0 C57
2021-11-24 23:23:56 S 11 17 10.697 +14 23 45.31 V C57
2021-11-24 23:23:56 s 1 +80354.890 0 +358900.96 5550.0 C57
2021-11-24 23:33:56 S 11 17 12.036 +14 23 41.10 V C57
2021-11-24 23:33:56 s 1 +80024.299 0 +359113.50 7650.0 C57
2021-11-25 01:13:56 S 11 17 22.061 +14 22 19.63 V C57
2021-11-25 01:13:56 s 1 +76705.968 0 +361182.13 9860.0 C57
2021-11-25 01:23:56 S 11 17 23.414 +14 22 14.41 V C57
2021-11-25 01:23:56 s 1 +76372.920 0 +361383.32 4300.0 C57
2021-11-25 01:43:56 S 11 17 25.606 +14 21 56.30 V C57
2021-11-25 01:43:56 s 1 +75706.176 0 +361782.63 1190.0 C57
2021-11-25 02:03:56 S 11 17 27.713 +14 21 40.79 V C57
2021-11-25 02:03:56 s 1 +75038.577 0 +362177.83 5430.0 C57
2021-11-25 02:13:56 S 11 17 28.690 +14 21 37.80 V C57
2021-11-25 02:13:56 s 1 +74704.459 0 +362373.89 6580.0 C57
2021-11-25 04:03:56 S 11 17 40.375 +14 20 06.65 V C57
2021-11-25 04:03:56 s 1 +71015.538 0 +364462.86 7420.0 C57
2021-11-25 04:13:56 S 11 17 41.323 +14 20 02.58 V C57
2021-11-25 04:13:56 s 1 +70678.972 0 +364646.63 1090.0 C57
2021-11-25 04:23:56 S 11 17 42.336 +14 19 49.98 V C57
2021-11-25 04:23:56 s 1 +70342.210 0 +364829.38 4160.0 C57
2021-11-25 04:33:56 S 11 17 43.241 +14 19 42.46 V C57
2021-11-25 04:33:56 s 1 +70005.252 0 +365011.10 6640.0 C57
2021-11-25 04:43:56 S 11 17 44.496 +14 19 35.51 V C57
2021-11-25 04:43:56 s 1 +69668.101 0 +365191.80 8540.0 C57
2021-11-25 06:13:56 S 11 17 54.036 +14 18 28.19 V C57
2021-11-25 06:13:56 s 1 +66625.177 0 +366772.23 9930.0 C57
2021-11-25 06:53:56 S 11 17 58.090 +14 17 50.14 V C57
2021-11-25 06:53:56 s 1 +65267.957 0 +367448.17 1770.0 C57
2021-11-25 07:03:56 S 11 17 59.045 +14 17 44.05 V C57
2021-11-25 07:03:56 s 1 +64928.203 0 +367614.61 5910.0 C57
2021-11-25 07:13:56 S 11 18 00.264 +14 17 32.32 V C57
2021-11-25 07:13:56 s 1 +64588.271 0 +367780.04 9520.0 C57
2021-11-25 07:43:56 S 11 18 03.454 +14 17 08.27 V C57
2021-11-25 07:43:56 s 1 +63567.421 0 +368270.23 7250.0 C57
2021-11-25 07:53:56 S 11 18 04.046 +14 17 01.86 V C57
2021-11-25 07:53:56 s 1 +63226.790 0 +368431.60 8810.0 C57
2021-11-25 09:03:56 S 11 18 11.717 +14 16 07.28 V C57
2021-11-25 09:03:56 s 1 +60837.614 0 +369532.80 5900.0 C57
2021-11-25 09:13:56 S 11 18 12.509 +14 16 02.71 V C57
2021-11-25 09:13:56 s 1 +60495.636 0 +369686.06 3550.0 C57
2021-11-25 09:23:56 S 11 18 13.886 +14 15 52.34 V C57
2021-11-25 09:23:56 s 1 +60153.495 0 +369838.32 740.0 C57
2021-11-25 09:33:56 S 11 18 14.983 +14 15 48.10 V C57
2021-11-25 09:33:56 s 1 +59811.192 0 +369989.56 7460.0 C57
2021-11-25 09:43:56 S 11 18 15.953 +14 15 35.60 V C57
2021-11-25 09:43:56 s 1 +59468.727 0 +370139.79 3720.0 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)