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 06:13:54 S 12 28 42.593 +04 14 11.08 V C57
2021-12-22 06:13:54 s 1 +63343.992 0 +372819.00 2060.0 C57
2021-12-22 06:23:55 S 12 28 43.560 +04 14 01.39 V C57
2021-12-22 06:23:55 s 1 +63002.270 0 +372990.94 130.0 C57
2021-12-22 06:33:54 S 12 28 44.791 +04 13 47.28 V C57
2021-12-22 06:33:54 s 1 +62660.375 0 +373161.89 7700.0 C57
2021-12-22 06:43:55 S 12 28 46.106 +04 13 40.08 V C57
2021-12-22 06:43:55 s 1 +62318.307 0 +373331.85 4800.0 C57
2021-12-22 06:53:54 S 12 28 47.222 +04 13 28.27 V C57
2021-12-22 06:53:54 s 1 +61976.068 0 +373500.82 1420.0 C57
2021-12-22 07:03:54 S 12 28 48.422 +04 13 18.91 V C57
2021-12-22 07:03:54 s 1 +61633.658 0 +373668.80 7570.0 C57
2021-12-22 07:13:54 S 12 28 49.447 +04 13 06.60 V C57
2021-12-22 07:13:54 s 1 +61291.079 0 +373835.79 3250.0 C57
2021-12-22 08:23:54 S 12 28 58.037 +04 11 46.90 V C57
2021-12-22 08:23:54 s 1 +58888.366 0 +374977.09 310.0 C57
2021-12-22 08:33:54 S 12 28 59.112 +04 11 33.79 V C57
2021-12-22 08:33:54 s 1 +58544.468 0 +375136.19 2410.0 C57
2021-12-22 08:43:54 S 12 29 00.468 +04 11 23.75 V C57
2021-12-22 08:43:54 s 1 +58200.411 0 +375294.31 4080.0 C57
2021-12-22 08:53:54 S 12 29 01.745 +04 11 14.86 V C57
2021-12-22 08:53:54 s 1 +57856.195 0 +375451.44 5330.0 C57
2021-12-22 09:03:55 S 12 29 02.755 +04 11 01.57 V C57
2021-12-22 09:03:55 s 1 +57511.820 0 +375607.58 6160.0 C57
2021-12-22 09:13:54 S 12 29 03.931 +04 10 51.13 V C57
2021-12-22 09:13:54 s 1 +57167.289 0 +375762.74 6570.0 C57
2021-12-22 09:23:55 S 12 29 05.189 +04 10 37.13 V C57
2021-12-22 09:23:55 s 1 +56822.602 0 +375916.92 6570.0 C57
2021-12-22 09:33:54 S 12 29 06.379 +04 10 28.99 V C57
2021-12-22 09:33:54 s 1 +56477.760 0 +376070.11 6170.0 C57
2021-12-22 09:43:55 S 12 29 07.541 +04 10 14.70 V C57
2021-12-22 09:43:55 s 1 +56132.764 0 +376222.32 5360.0 C57
2021-12-22 10:03:54 S 12 29 09.838 +04 09 55.80 V C57
2021-12-22 10:03:54 s 1 +55442.315 0 +376523.80 2560.0 C57
2021-12-22 10:43:54 S 12 29 14.784 +04 09 10.26 V C57
2021-12-22 10:43:54 s 1 +54059.617 0 +377114.96 2310.0 C57
2021-12-22 10:53:55 S 12 29 16.025 +04 08 58.78 V C57
2021-12-22 10:53:55 s 1 +53713.573 0 +377260.30 8800.0 C57
2021-12-22 11:03:54 S 12 29 17.275 +04 08 43.62 V C57
2021-12-22 11:03:54 s 1 +53367.383 0 +377404.66 4930.0 C57
2021-12-22 11:13:54 S 12 29 18.305 +04 08 35.30 V C57
2021-12-22 11:13:54 s 1 +53021.049 0 +377548.04 690.0 C57
2021-12-22 11:23:54 S 12 29 19.560 +04 08 22.60 V C57
2021-12-22 11:23:54 s 1 +52674.572 0 +377690.44 6090.0 C57
2021-12-22 11:43:54 S 12 29 21.958 +04 08 01.25 V C57
2021-12-22 11:43:54 s 1 +51981.190 0 +377972.29 5840.0 C57
2021-12-22 12:13:54 S 12 29 25.454 +04 07 25.21 V C57
2021-12-22 12:13:54 s 1 +50940.065 0 +378387.74 7850.0 C57
2021-12-22 12:23:55 S 12 29 26.988 +04 07 14.88 V C57
2021-12-22 12:23:55 s 1 +50592.747 0 +378524.27 1180.0 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)