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 23:53:54 S 12 30 49.123 +03 54 13.36 V C57
2021-12-22 23:53:54 s 1 +26351.742 0 +385597.93 3620.0 C57
2021-12-23 00:03:54 S 12 30 50.326 +03 54 01.12 V C57
2021-12-23 00:03:54 s 1 +25997.218 0 +385666.63 3620.0 C57
2021-12-23 00:13:54 S 12 30 51.523 +03 53 47.62 V C57
2021-12-23 00:13:54 s 1 +25642.624 0 +385734.37 3660.0 C57
2021-12-23 00:23:54 S 12 30 52.642 +03 53 37.68 V C57
2021-12-23 00:23:54 s 1 +25287.962 0 +385801.14 3760.0 C57
2021-12-23 00:53:54 S 12 30 56.198 +03 53 03.44 V C57
2021-12-23 00:53:54 s 1 +24223.574 0 +385995.70 4270.0 C57
2021-12-23 01:03:54 S 12 30 57.408 +03 52 50.95 V C57
2021-12-23 01:03:54 s 1 +23868.647 0 +386058.63 4510.0 C57
2021-12-23 01:13:54 S 12 30 58.538 +03 52 45.66 V C57
2021-12-23 01:13:54 s 1 +23513.657 0 +386120.60 4780.0 C57
2021-12-23 02:23:54 S 12 31 06.799 +03 51 17.24 V C57
2021-12-23 02:23:54 s 1 +21027.017 0 +386527.51 7020.0 C57
2021-12-23 02:33:54 S 12 31 08.191 +03 51 09.29 V C57
2021-12-23 02:33:54 s 1 +20671.550 0 +386581.80 7360.0 C57
2021-12-23 02:43:54 S 12 31 09.350 +03 50 58.49 V C57
2021-12-23 02:43:54 s 1 +20316.027 0 +386635.14 7680.0 C57
2021-12-23 02:53:54 S 12 31 10.531 +03 50 46.86 V C57
2021-12-23 02:53:54 s 1 +19960.450 0 +386687.51 7990.0 C57
2021-12-23 03:03:54 S 12 31 11.743 +03 50 34.12 V C57
2021-12-23 03:03:54 s 1 +19604.819 0 +386738.92 8290.0 C57
2021-12-23 03:13:54 S 12 31 12.787 +03 50 25.01 V C57
2021-12-23 03:13:54 s 1 +19249.136 0 +386789.38 8560.0 C57
2021-12-23 03:23:54 S 12 31 13.853 +03 50 12.95 V C57
2021-12-23 03:23:54 s 1 +18893.400 0 +386838.87 8810.0 C57
2021-12-23 03:33:54 S 12 31 15.149 +03 50 00.46 V C57
2021-12-23 03:33:54 s 1 +18537.614 0 +386887.41 9030.0 C57
2021-12-23 03:43:54 S 12 31 16.435 +03 49 49.98 V C57
2021-12-23 03:43:54 s 1 +18181.777 0 +386934.99 9220.0 C57
2021-12-23 03:53:54 S 12 31 17.585 +03 49 39.32 V C57
2021-12-23 03:53:54 s 1 +17825.892 0 +386981.61 9380.0 C57
2021-12-23 04:03:54 S 12 31 18.722 +03 49 24.78 V C57
2021-12-23 04:03:54 s 1 +17469.958 0 +387027.27 9490.0 C57
2021-12-23 04:13:54 S 12 31 19.922 +03 49 15.24 V C57
2021-12-23 04:13:54 s 1 +17113.977 0 +387071.97 9560.0 C57
2021-12-23 04:53:54 S 12 31 24.763 +03 48 33.16 V C57
2021-12-23 04:53:54 s 1 +15689.600 0 +387241.20 9340.0 C57
2021-12-23 05:13:54 S 12 31 27.142 +03 48 07.02 V C57
2021-12-23 05:13:54 s 1 +14977.151 0 +387320.07 8860.0 C57
2021-12-23 05:23:54 S 12 31 28.519 +03 47 54.89 V C57
2021-12-23 05:23:54 s 1 +14620.865 0 +387358.07 8520.0 C57
2021-12-23 05:33:54 S 12 31 29.695 +03 47 43.62 V C57
2021-12-23 05:33:54 s 1 +14264.538 0 +387395.11 8110.0 C57
2021-12-23 05:43:54 S 12 31 30.838 +03 47 33.79 V C57
2021-12-23 05:43:54 s 1 +13908.173 0 +387431.20 7610.0 C57
2021-12-23 05:53:54 S 12 31 32.004 +03 47 23.86 V C57
2021-12-23 05:53:54 s 1 +13551.770 0 +387466.33 7040.0 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)