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
2021-12-28 23:23:54 S 12 47 42.715 +01 04 27.80 V C57
2021-12-28 23:23:54 s 1 -170748.71 7 +62041.124 3440.0 C57
2021-12-28 23:33:54 S 12 47 44.069 +01 04 18.37 V C57
2021-12-28 23:33:54 s 1 -170512.47 6 +61146.061 360.0 C57
2021-12-28 23:43:54 S 12 47 45.202 +01 04 06.82 V C57
2021-12-28 23:43:54 s 1 -170272.98 9 +60249.831 2920.0 C57
2021-12-28 23:53:54 S 12 47 46.454 +01 03 53.82 V C57
2021-12-28 23:53:54 s 1 -170030.23 5 +59352.443 1020.0 C57
2021-12-29 00:13:54 S 12 47 48.749 +01 03 29.38 V C57
2021-12-29 00:13:54 s 1 -169534.83 5 +57554.223 3480.0 C57
2021-12-29 00:33:54 S 12 47 51.012 +01 03 04.75 V C57
2021-12-29 00:33:54 s 1 -169026.09 6 +55751.464 6980.0 C57
2021-12-29 00:43:54 S 12 47 52.133 +01 02 54.20 V C57
2021-12-29 00:43:54 s 1 -168766.66 7 +54848.404 1370.0 C57
2021-12-29 00:53:54 S 12 47 53.203 +01 02 42.83 V C57
2021-12-29 00:53:54 s 1 -168503.83 3 +53944.235 730.0 C57
2021-12-29 01:03:54 S 12 47 54.348 +01 02 31.02 V C57
2021-12-29 01:03:54 s 1 -168237.57 2 +53038.965 4960.0 C57
2021-12-29 01:13:54 S 12 47 55.421 +01 02 20.04 V C57
2021-12-29 01:13:54 s 1 -167967.86 1 +52132.605 3950.0 C57
2021-12-29 01:23:54 S 12 47 56.506 +01 02 03.52 V C57
2021-12-29 01:23:54 s 1 -167694.67 4 +51225.164 7610.0 C57
2021-12-29 01:53:54 S 12 48 00.132 +01 01 31.51 V C57
2021-12-29 01:53:54 s 1 -166854.02 1 +48496.448 5580.0 C57
2021-12-29 02:03:54 S 12 48 01.236 +01 01 20.17 V C57
2021-12-29 02:03:54 s 1 -166566.69 2 +47584.780 6890.0 C57
2021-12-29 02:13:54 S 12 48 02.530 +01 01 07.21 V C57
2021-12-29 02:13:54 s 1 -166275.76 4 +46672.081 2340.0 C57
2021-12-29 02:23:54 S 12 48 03.629 +01 00 53.57 V C57
2021-12-29 02:23:54 s 1 -165981.21 5 +45758.361 1850.0 C57
2021-12-29 03:03:54 S 12 48 08.208 +01 00 07.70 V C57
2021-12-29 03:03:54 s 1 -164766.28 0 +42093.510 8190.0 C57
2021-12-29 03:13:54 S 12 48 09.362 +00 59 52.73 V C57
2021-12-29 03:13:54 s 1 -164453.23 2 +41174.862 6310.0 C57
2021-12-29 03:23:54 S 12 48 10.418 +00 59 42.54 V C57
2021-12-29 03:23:54 s 1 -164136.40 7 +40255.265 7820.0 C57
2021-12-29 03:33:54 S 12 48 11.597 +00 59 29.33 V C57
2021-12-29 03:33:54 s 1 -163815.77 7 +39334.732 2620.0 C57
2021-12-29 03:53:54 S 12 48 13.846 +00 59 05.28 V C57
2021-12-29 03:53:54 s 1 -163162.99 6 +37490.906 1610.0 C57
2021-12-29 07:43:54 S 12 48 40.262 +00 54 28.48 V C57
2021-12-29 07:43:54 s 1 -154480.75 3 +16060.949 3890.0 C57
2021-12-29 07:53:54 S 12 48 41.321 +00 54 19.37 V C57
2021-12-29 07:53:54 s 1 -154051.07 3 +15121.642 1830.0 C57
2021-12-29 08:23:54 S 12 48 44.748 +00 53 42.90 V C57
2021-12-29 08:23:54 s 1 -152734.21 7 +12301.070 4600.0 C57
2021-12-29 08:33:54 S 12 48 45.955 +00 53 27.78 V C57
2021-12-29 08:33:54 s 1 -152285.87 9 +11360.077 1380.0 C57
2021-12-29 08:43:54 S 12 48 46.997 +00 53 19.75 V C57
2021-12-29 08:43:54 s 1 -151832.79 2 +10418.724 7530.0 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)