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
2021-12-21 09:23:55 S 12 26 12.998 +04 37 31.69 V C57
2021-12-21 09:23:55 s 1 +104310.99 9 +343385.31 9330.0 C57
2021-12-21 09:33:55 S 12 26 14.095 +04 37 19.24 V C57
2021-12-21 09:33:55 s 1 +104000.20 0 +343684.64 5880.0 C57
2021-12-21 09:53:54 S 12 26 16.524 +04 36 57.13 V C57
2021-12-21 09:53:54 s 1 +103377.62 1 +344280.13 5660.0 C57
2021-12-21 10:03:55 S 12 26 17.806 +04 36 44.86 V C57
2021-12-21 10:03:55 s 1 +103065.84 3 +344576.29 8880.0 C57
2021-12-21 10:13:54 S 12 26 19.022 +04 36 37.58 V C57
2021-12-21 10:13:54 s 1 +102753.74 2 +344871.40 1010.0 C57
2021-12-21 10:23:55 S 12 26 20.102 +04 36 25.88 V C57
2021-12-21 10:23:55 s 1 +102441.31 9 +345165.46 2040.0 C57
2021-12-21 11:23:54 S 12 26 27.420 +04 35 17.59 V C57
2021-12-21 11:23:54 s 1 +100560.09 8 +346907.78 5610.0 C57
2021-12-21 11:33:55 S 12 26 28.637 +04 35 03.62 V C57
2021-12-21 11:33:55 s 1 +100245.46 1 +347194.50 9150.0 C57
2021-12-21 11:43:54 S 12 26 29.722 +04 34 56.89 V C57
2021-12-21 11:43:54 s 1 +99930.513 0 +347480.17 1640.0 C57
2021-12-21 11:53:55 S 12 26 31.094 +04 34 43.00 V C57
2021-12-21 11:53:55 s 1 +99615.256 0 +347764.80 3100.0 C57
2021-12-21 12:03:55 S 12 26 32.095 +04 34 32.34 V C57
2021-12-21 12:03:55 s 1 +99299.691 0 +348048.38 3520.0 C57
2021-12-21 12:13:55 S 12 26 33.312 +04 34 22.55 V C57
2021-12-21 12:13:55 s 1 +98983.820 0 +348330.92 2900.0 C57
2021-12-21 12:23:55 S 12 26 34.598 +04 34 10.88 V C57
2021-12-21 12:23:55 s 1 +98667.643 0 +348612.41 1270.0 C57
2021-12-21 12:33:54 S 12 26 35.813 +04 33 57.56 V C57
2021-12-21 12:33:54 s 1 +98351.163 0 +348892.86 8610.0 C57
2021-12-21 12:43:55 S 12 26 36.847 +04 33 47.05 V C57
2021-12-21 12:43:55 s 1 +98034.380 0 +349172.27 4940.0 C57
2021-12-21 12:53:54 S 12 26 38.126 +04 33 36.50 V C57
2021-12-21 12:53:54 s 1 +97717.297 0 +349450.64 260.0 C57
2021-12-21 13:03:55 S 12 26 39.242 +04 33 27.22 V C57
2021-12-21 13:03:55 s 1 +97399.914 0 +349727.96 4590.0 C57
2021-12-21 13:43:55 S 12 26 44.302 +04 32 41.78 V C57
2021-12-21 13:43:55 s 1 +96127.412 0 +350826.86 1960.0 C57
2021-12-21 13:53:55 S 12 26 45.005 +04 32 30.44 V C57
2021-12-21 13:53:55 s 1 +95808.551 0 +351098.99 1350.0 C57
2021-12-21 14:03:54 S 12 26 46.546 +04 32 20.18 V C57
2021-12-21 14:03:54 s 1 +95489.399 0 +351370.08 9780.0 C57
2021-12-21 14:13:55 S 12 26 47.909 +04 32 08.59 V C57
2021-12-21 14:13:55 s 1 +95169.957 0 +351640.13 7240.0 C57
2021-12-21 14:23:54 S 12 26 48.970 +04 31 57.04 V C57
2021-12-21 14:23:54 s 1 +94850.226 0 +351909.14 3750.0 C57
2021-12-21 14:33:55 S 12 26 50.033 +04 31 47.60 V C57
2021-12-21 14:33:55 s 1 +94530.207 0 +352177.13 9300.0 C57
2021-12-21 14:43:54 S 12 26 51.286 +04 31 32.48 V C57
2021-12-21 14:43:54 s 1 +94209.902 0 +352444.07 3900.0 C57
2021-12-21 14:53:55 S 12 26 52.428 +04 31 22.80 V C57
2021-12-21 14:53:55 s 1 +93889.313 0 +352709.98 7560.0 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)