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
2021-11-25 09:53:56 S 11 18 17.006 +14 15 30.35 V C57
2021-11-25 09:53:56 s 1 +59126.102 0 +370289.01 9520.0 C57
2021-11-25 10:03:56 S 11 18 17.969 +14 15 20.77 V C57
2021-11-25 10:03:56 s 1 +58783.318 0 +370437.21 4870.0 C57
2021-11-25 11:53:56 S 11 18 29.275 +14 13 54.23 V C57
2021-11-25 11:53:56 s 1 +55002.490 0 +372000.90 4960.0 C57
2021-11-25 12:13:56 S 11 18 31.574 +14 13 37.60 V C57
2021-11-25 12:13:56 s 1 +54313.122 0 +372272.10 5000.0 C57
2021-11-25 12:23:56 S 11 18 32.604 +14 13 29.24 V C57
2021-11-25 12:23:56 s 1 +53968.220 0 +372406.19 4430.0 C57
2021-11-25 12:33:56 S 11 18 33.648 +14 13 17.04 V C57
2021-11-25 12:33:56 s 1 +53623.176 0 +372539.27 3460.0 C57
2021-11-25 13:03:56 S 11 18 36.677 +14 13 02.96 V C57
2021-11-25 13:03:56 s 1 +52587.191 0 +372932.49 8240.0 C57
2021-11-25 14:23:56 S 11 18 44.952 +14 11 53.34 V C57
2021-11-25 14:23:56 s 1 +49818.517 0 +373936.86 8010.0 C57
2021-11-25 14:33:56 S 11 18 46.270 +14 11 51.40 V C57
2021-11-25 14:33:56 s 1 +49471.833 0 +374057.89 2630.0 C57
2021-11-25 14:43:56 S 11 18 47.062 +14 11 41.96 V C57
2021-11-25 14:43:56 s 1 +49125.018 0 +374177.92 6910.0 C57
2021-11-25 14:53:56 S 11 18 47.998 +14 11 28.18 V C57
2021-11-25 14:53:56 s 1 +48778.075 0 +374296.94 850.0 C57
2021-11-25 15:03:56 S 11 18 49.529 +14 11 20.90 V C57
2021-11-25 15:03:56 s 1 +48431.004 0 +374414.96 4460.0 C57
2021-11-25 15:13:56 S 11 18 50.738 +14 11 13.27 V C57
2021-11-25 15:13:56 s 1 +48083.805 0 +374531.98 7740.0 C57
2021-11-25 15:23:56 S 11 18 51.286 +14 11 12.19 V C57
2021-11-25 15:23:56 s 1 +47736.481 0 +374647.99 690.0 C57
2021-11-25 16:43:56 S 11 18 59.669 +14 10 01.24 V C57
2021-11-25 16:43:56 s 1 +44953.479 0 +375540.05 3010.0 C57
2021-11-25 16:53:56 S 11 19 00.991 +14 09 53.64 V C57
2021-11-25 16:53:56 s 1 +44605.068 0 +375647.06 3200.0 C57
2021-11-25 17:03:56 S 11 19 01.747 +14 09 44.21 V C57
2021-11-25 17:03:56 s 1 +44256.541 0 +375753.06 3100.0 C57
2021-11-25 17:13:56 S 11 19 02.993 +14 09 34.49 V C57
2021-11-25 17:13:56 s 1 +43907.899 0 +375858.07 2710.0 C57
2021-11-25 17:23:56 S 11 19 04.164 +14 09 30.28 V C57
2021-11-25 17:23:56 s 1 +43559.143 0 +375962.07 2050.0 C57
2021-11-25 17:33:56 S 11 19 05.045 +14 09 20.05 V C57
2021-11-25 17:33:56 s 1 +43210.275 0 +376065.08 1110.0 C57
2021-11-25 17:53:56 S 11 19 07.030 +14 09 05.40 V C57
2021-11-25 17:53:56 s 1 +42512.203 0 +376268.09 8410.0 C57
2021-11-25 18:03:56 S 11 19 08.170 +14 09 03.71 V C57
2021-11-25 18:03:56 s 1 +42163.003 0 +376368.09 6660.0 C57
2021-11-25 19:43:56 S 11 19 18.523 +14 07 35.54 V C57
2021-11-25 19:43:56 s 1 +38665.176 0 +377313.26 5460.0 C57
2021-11-25 19:53:56 S 11 19 19.632 +14 07 27.23 V C57
2021-11-25 19:53:56 s 1 +38314.833 0 +377402.29 1040.0 C57
2021-11-25 20:03:56 S 11 19 20.477 +14 07 19.74 V C57
2021-11-25 20:03:56 s 1 +37964.393 0 +377490.32 6420.0 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)