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 19:03:54 S 12 30 14.338 +03 59 41.60 V C57
2021-12-22 19:03:54 s 1 +36598.617 0 +383186.58 7240.0 C57
2021-12-22 19:13:54 S 12 30 15.624 +03 59 30.30 V C57
2021-12-22 19:13:54 s 1 +36246.509 0 +383283.24 380.0 C57
2021-12-22 19:23:54 S 12 30 16.886 +03 59 18.10 V C57
2021-12-22 19:23:54 s 1 +35894.304 0 +383378.94 3360.0 C57
2021-12-22 19:33:55 S 12 30 18.079 +03 59 08.59 V C57
2021-12-22 19:33:55 s 1 +35542.003 0 +383473.67 6180.0 C57
2021-12-22 19:43:54 S 12 30 19.092 +03 58 55.81 V C57
2021-12-22 19:43:54 s 1 +35189.608 0 +383567.43 8840.0 C57
2021-12-22 19:53:54 S 12 30 20.414 +03 58 43.50 V C57
2021-12-22 19:53:54 s 1 +34837.120 0 +383660.23 1350.0 C57
2021-12-22 20:03:54 S 12 30 21.641 +03 58 33.02 V C57
2021-12-22 20:03:54 s 1 +34484.538 0 +383752.06 3720.0 C57
2021-12-22 20:13:54 S 12 30 22.824 +03 58 24.46 V C57
2021-12-22 20:13:54 s 1 +34131.865 0 +383842.92 5940.0 C57
2021-12-22 20:23:54 S 12 30 23.976 +03 58 09.01 V C57
2021-12-22 20:23:54 s 1 +33779.101 0 +383932.82 8010.0 C57
2021-12-22 20:53:54 S 12 30 27.677 +03 57 39.71 V C57
2021-12-22 20:53:54 s 1 +32720.273 0 +384196.73 3450.0 C57
2021-12-22 21:03:55 S 12 30 28.721 +03 57 24.05 V C57
2021-12-22 21:03:55 s 1 +32367.156 0 +384282.76 5010.0 C57
2021-12-22 21:13:54 S 12 30 30.101 +03 57 12.71 V C57
2021-12-22 21:13:54 s 1 +32013.952 0 +384367.84 6450.0 C57
2021-12-22 21:23:54 S 12 30 31.174 +03 57 03.06 V C57
2021-12-22 21:23:54 s 1 +31660.662 0 +384451.94 7780.0 C57
2021-12-22 21:33:54 S 12 30 32.275 +03 56 52.37 V C57
2021-12-22 21:33:54 s 1 +31307.289 0 +384535.09 8990.0 C57
2021-12-22 21:43:54 S 12 30 33.538 +03 56 38.98 V C57
2021-12-22 21:43:54 s 1 +30953.832 0 +384617.27 90.0 C57
2021-12-22 21:53:54 S 12 30 34.752 +03 56 27.71 V C57
2021-12-22 21:53:54 s 1 +30600.293 0 +384698.48 1090.0 C57
2021-12-22 22:03:54 S 12 30 35.926 +03 56 18.10 V C57
2021-12-22 22:03:54 s 1 +30246.673 0 +384778.73 1990.0 C57
2021-12-22 22:13:54 S 12 30 37.114 +03 56 03.95 V C57
2021-12-22 22:13:54 s 1 +29892.972 0 +384858.02 2790.0 C57
2021-12-22 22:23:54 S 12 30 38.335 +03 55 55.60 V C57
2021-12-22 22:23:54 s 1 +29539.192 0 +384936.34 3500.0 C57
2021-12-22 22:33:54 S 12 30 39.576 +03 55 40.62 V C57
2021-12-22 22:33:54 s 1 +29185.333 0 +385013.70 4130.0 C57
2021-12-22 22:43:54 S 12 30 40.618 +03 55 31.22 V C57
2021-12-22 22:43:54 s 1 +28831.396 0 +385090.10 4660.0 C57
2021-12-22 22:53:54 S 12 30 42.103 +03 55 19.42 V C57
2021-12-22 22:53:54 s 1 +28477.382 0 +385165.54 4880.0 C57
2021-12-22 23:03:54 S 12 30 43.085 +03 55 05.59 V C57
2021-12-22 23:03:54 s 1 +28123.293 0 +385240.01 4500.0 C57
2021-12-22 23:13:54 S 12 30 44.230 +03 54 57.82 V C57
2021-12-22 23:13:54 s 1 +27769.129 0 +385313.52 4190.0 C57
2021-12-22 23:43:54 S 12 30 47.765 +03 54 24.62 V C57
2021-12-22 23:43:54 s 1 +26706.197 0 +385528.27 3670.0 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)