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
2021-12-24 07:53:54 S 12 34 37.721 +03 17 25.91 V C57
2021-12-24 07:53:54 s 1 -41932.117 0 +381244.17 5280.0 C57
2021-12-24 08:03:54 S 12 34 38.803 +03 17 11.90 V C57
2021-12-24 08:03:54 s 1 -42283.283 0 +381129.10 3930.0 C57
2021-12-24 08:13:54 S 12 34 40.075 +03 17 01.36 V C57
2021-12-24 08:13:54 s 1 -42634.341 0 +381013.06 1890.0 C57
2021-12-24 08:23:54 S 12 34 41.107 +03 16 49.37 V C57
2021-12-24 08:23:54 s 1 -42985.293 0 +380896.06 9140.0 C57
2021-12-24 08:33:54 S 12 34 42.156 +03 16 38.57 V C57
2021-12-24 08:33:54 s 1 -43336.136 0 +380778.09 5680.0 C57
2021-12-24 08:43:54 S 12 34 43.555 +03 16 25.14 V C57
2021-12-24 08:43:54 s 1 -43686.870 0 +380659.16 1510.0 C57
2021-12-24 10:03:54 S 12 34 53.107 +03 14 51.86 V C57
2021-12-24 10:03:54 s 1 -46488.696 0 +379672.97 1950.0 C57
2021-12-24 10:13:54 S 12 34 54.163 +03 14 41.03 V C57
2021-12-24 10:13:54 s 1 -46838.404 0 +379545.35 1170.0 C57
2021-12-24 10:23:54 S 12 34 55.397 +03 14 30.55 V C57
2021-12-24 10:23:54 s 1 -47187.993 0 +379416.77 9630.0 C57
2021-12-24 10:33:54 S 12 34 56.650 +03 14 15.65 V C57
2021-12-24 10:33:54 s 1 -47537.462 0 +379287.21 7340.0 C57
2021-12-24 10:43:54 S 12 34 57.883 +03 14 05.32 V C57
2021-12-24 10:43:54 s 1 -47886.811 0 +379156.69 4270.0 C57
2021-12-24 10:53:54 S 12 34 58.992 +03 13 54.59 V C57
2021-12-24 10:53:54 s 1 -48236.037 0 +379025.21 440.0 C57
2021-12-24 11:03:54 S 12 35 00.170 +03 13 41.81 V C57
2021-12-24 11:03:54 s 1 -48585.141 0 +378892.75 5840.0 C57
2021-12-24 11:13:54 S 12 35 01.466 +03 13 32.30 V C57
2021-12-24 11:13:54 s 1 -48934.121 0 +378759.33 460.0 C57
2021-12-24 11:33:54 S 12 35 03.845 +03 13 09.41 V C57
2021-12-24 11:33:54 s 1 -49631.705 0 +378489.58 7360.0 C57
2021-12-24 12:33:54 S 12 35 10.766 +03 11 57.41 V C57
2021-12-24 12:33:54 s 1 -51721.386 0 +377657.10 8950.0 C57
2021-12-24 12:53:54 S 12 35 13.241 +03 11 34.51 V C57
2021-12-24 12:53:54 s 1 -52416.895 0 +377371.85 3000.0 C57
2021-12-24 13:03:54 S 12 35 14.381 +03 11 23.75 V C57
2021-12-24 13:03:54 s 1 -52764.448 0 +377227.77 8790.0 C57
2021-12-24 13:23:54 S 12 35 16.824 +03 11 02.00 V C57
2021-12-24 13:23:54 s 1 -53459.146 0 +376936.70 7880.0 C57
2021-12-24 13:33:54 S 12 35 17.974 +03 10 47.93 V C57
2021-12-24 13:33:54 s 1 -53806.289 0 +376789.71 1180.0 C57
2021-12-24 13:43:54 S 12 35 19.054 +03 10 38.32 V C57
2021-12-24 13:43:54 s 1 -54153.294 0 +376641.75 3630.0 C57
2021-12-24 13:53:54 S 12 35 20.304 +03 10 24.82 V C57
2021-12-24 13:53:54 s 1 -54500.158 0 +376492.81 5230.0 C57
2021-12-24 14:03:54 S 12 35 21.768 +03 10 16.25 V C57
2021-12-24 14:03:54 s 1 -54846.882 0 +376342.91 5980.0 C57
2021-12-24 14:13:54 S 12 35 22.910 +03 09 55.58 V C57
2021-12-24 14:13:54 s 1 -55193.465 0 +376192.03 5880.0 C57
2021-12-24 14:43:54 S 12 35 26.530 +03 09 30.28 V C57
2021-12-24 14:43:54 s 1 -56232.351 0 +375733.57 410.0 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)