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
2021-12-22 13:13:54 S 12 29 32.662 +04 06 20.27 V C57
2021-12-22 13:13:54 s 1 +48854.129 0 +379192.24 2960.0 C57
2021-12-22 13:23:54 S 12 29 34.020 +04 06 05.36 V C57
2021-12-22 13:23:54 s 1 +48506.007 0 +379322.90 4370.0 C57
2021-12-22 13:43:54 S 12 29 36.290 +04 05 46.28 V C57
2021-12-22 13:43:54 s 1 +47809.372 0 +379581.30 6280.0 C57
2021-12-22 13:53:55 S 12 29 37.418 +04 05 34.80 V C57
2021-12-22 13:53:55 s 1 +47460.861 0 +379709.04 6780.0 C57
2021-12-22 14:03:54 S 12 29 38.604 +04 05 21.66 V C57
2021-12-22 14:03:54 s 1 +47112.223 0 +379835.80 6990.0 C57
2021-12-22 14:13:54 S 12 29 39.778 +04 05 11.47 V C57
2021-12-22 14:13:54 s 1 +46763.458 0 +379961.59 6920.0 C57
2021-12-22 14:23:54 S 12 29 40.944 +04 04 58.91 V C57
2021-12-22 14:23:54 s 1 +46414.567 0 +380086.40 6550.0 C57
2021-12-22 14:33:54 S 12 29 42.221 +04 04 49.48 V C57
2021-12-22 14:33:54 s 1 +46065.552 0 +380210.24 5910.0 C57
2021-12-22 14:43:54 S 12 29 43.459 +04 04 37.09 V C57
2021-12-22 14:43:54 s 1 +45716.414 0 +380333.11 4990.0 C57
2021-12-22 14:53:54 S 12 29 44.808 +04 04 23.84 V C57
2021-12-22 14:53:54 s 1 +45367.152 0 +380455.00 3800.0 C57
2021-12-22 15:03:55 S 12 29 45.869 +04 04 14.30 V C57
2021-12-22 15:03:55 s 1 +45017.769 0 +380575.92 2340.0 C57
2021-12-22 15:53:54 S 12 29 51.593 +04 03 14.98 V C57
2021-12-22 15:53:54 s 1 +43269.064 0 +381165.91 1140.0 C57
2021-12-22 16:03:54 S 12 29 53.054 +04 03 06.01 V C57
2021-12-22 16:03:54 s 1 +42918.972 0 +381281.00 8150.0 C57
2021-12-22 16:13:54 S 12 29 54.281 +04 02 53.74 V C57
2021-12-22 16:13:54 s 1 +42568.764 0 +381395.11 4920.0 C57
2021-12-22 16:23:54 S 12 29 55.176 +04 02 42.32 V C57
2021-12-22 16:23:54 s 1 +42218.443 0 +381508.25 1460.0 C57
2021-12-22 16:33:55 S 12 29 56.611 +04 02 31.42 V C57
2021-12-22 16:33:55 s 1 +41868.010 0 +381620.42 7770.0 C57
2021-12-22 16:43:54 S 12 29 57.823 +04 02 20.54 V C57
2021-12-22 16:43:54 s 1 +41517.464 0 +381731.61 3840.0 C57
2021-12-22 16:53:54 S 12 29 58.932 +04 02 10.14 V C57
2021-12-22 16:53:54 s 1 +41166.807 0 +381841.84 9690.0 C57
2021-12-22 17:03:54 S 12 30 00.144 +04 01 58.12 V C57
2021-12-22 17:03:54 s 1 +40816.041 0 +381951.10 5330.0 C57
2021-12-22 17:13:54 S 12 30 01.392 +04 01 46.74 V C57
2021-12-22 17:13:54 s 1 +40465.165 0 +382059.38 740.0 C57
2021-12-22 17:23:54 S 12 30 02.683 +04 01 36.95 V C57
2021-12-22 17:23:54 s 1 +40114.182 0 +382166.70 5950.0 C57
2021-12-22 17:33:54 S 12 30 03.713 +04 01 27.62 V C57
2021-12-22 17:33:54 s 1 +39763.091 0 +382273.05 950.0 C57
2021-12-22 18:33:54 S 12 30 10.891 +04 00 17.17 V C57
2021-12-22 18:33:54 s 1 +37654.353 0 +382890.78 6800.0 C57
2021-12-22 18:43:54 S 12 30 12.137 +04 00 05.62 V C57
2021-12-22 18:43:54 s 1 +37302.540 0 +382990.35 450.0 C57
2021-12-22 18:53:54 S 12 30 13.188 +03 59 53.27 V C57
2021-12-22 18:53:54 s 1 +36950.628 0 +383088.95 3930.0 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)