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
2021-11-25 20:13:56 S 11 19 21.955 +14 07 18.05 V C57
2021-11-25 20:13:56 s 1 +37613.855 0 +377577.36 1570.0 C57
2021-11-25 20:23:56 S 11 19 22.646 +14 07 06.42 V C57
2021-11-25 20:23:56 s 1 +37263.222 0 +377663.40 6510.0 C57
2021-11-25 22:03:56 S 11 19 33.262 +14 05 49.52 V C57
2021-11-25 22:03:56 s 1 +33751.827 0 +378469.01 5120.0 C57
2021-11-25 22:23:56 S 11 19 35.297 +14 05 36.42 V C57
2021-11-25 22:23:56 s 1 +33048.494 0 +378618.19 670.0 C57
2021-11-25 22:33:56 S 11 19 36.365 +14 05 22.85 V C57
2021-11-25 22:33:56 s 1 +32696.703 0 +378691.28 3200.0 C57
2021-11-25 22:43:56 S 11 19 37.267 +14 05 15.36 V C57
2021-11-25 22:43:56 s 1 +32344.829 0 +378763.39 5580.0 C57
2021-11-25 22:53:56 S 11 19 38.525 +14 05 04.88 V C57
2021-11-25 22:53:56 s 1 +31992.874 0 +378834.49 7790.0 C57
2021-11-25 23:03:56 S 11 19 39.158 +14 04 59.95 V C57
2021-11-25 23:03:56 s 1 +31640.839 0 +378904.60 9860.0 C57
2021-11-25 23:13:56 S 11 19 40.594 +14 04 52.03 V C57
2021-11-25 23:13:56 s 1 +31288.724 0 +378973.72 1770.0 C57
2021-11-26 00:33:56 S 11 19 48.919 +14 03 44.89 V C57
2021-11-26 00:33:56 s 1 +28469.065 0 +379490.89 2210.0 C57
2021-11-26 00:53:56 S 11 19 51.074 +14 03 35.53 V C57
2021-11-26 00:53:56 s 1 +27763.424 0 +379610.24 3600.0 C57
2021-11-26 01:03:56 S 11 19 52.121 +14 03 23.22 V C57
2021-11-26 01:03:56 s 1 +27410.500 0 +379668.43 4140.0 C57
2021-11-26 01:13:56 S 11 19 52.970 +14 03 15.62 V C57
2021-11-26 01:13:56 s 1 +27057.508 0 +379725.63 4560.0 C57
2021-11-26 01:23:56 S 11 19 53.952 +14 03 11.12 V C57
2021-11-26 01:23:56 s 1 +26704.449 0 +379781.83 4890.0 C57
2021-11-26 01:33:56 S 11 19 55.015 +14 02 57.59 V C57
2021-11-26 01:33:56 s 1 +26351.324 0 +379837.04 5120.0 C57
2021-11-26 03:13:56 S 11 20 05.539 +14 01 43.72 V C57
2021-11-26 03:13:56 s 1 +22816.664 0 +380334.54 7030.0 C57
2021-11-26 03:23:56 S 11 20 06.636 +14 01 30.47 V C57
2021-11-26 03:23:56 s 1 +22462.878 0 +380378.83 7620.0 C57
2021-11-26 03:33:56 S 11 20 07.855 +14 01 22.84 V C57
2021-11-26 03:33:56 s 1 +22109.037 0 +380422.13 8250.0 C57
2021-11-26 03:43:56 S 11 20 08.633 +14 01 17.69 V C57
2021-11-26 03:43:56 s 1 +21755.142 0 +380464.44 8940.0 C57
2021-11-26 04:33:56 S 11 20 13.757 +14 00 31.97 V C57
2021-11-26 04:33:56 s 1 +19984.901 0 +380661.10 2950.0 C57
2021-11-26 05:53:56 S 11 20 21.847 +13 59 28.32 V C57
2021-11-26 05:53:56 s 1 +17150.079 0 +380924.21 540.0 C57
2021-11-26 06:03:56 S 11 20 23.534 +13 59 21.23 V C57
2021-11-26 06:03:56 s 1 +16795.535 0 +380952.63 1510.0 C57
2021-11-26 06:13:56 S 11 20 24.254 +13 59 17.74 V C57
2021-11-26 06:13:56 s 1 +16440.952 0 +380980.07 2480.0 C57
2021-11-26 06:23:56 S 11 20 25.310 +13 59 07.84 V C57
2021-11-26 06:23:56 s 1 +16086.331 0 +381006.51 3440.0 C57
2021-11-26 06:33:56 S 11 20 26.462 +13 58 57.25 V C57
2021-11-26 06:33:56 s 1 +15731.672 0 +381031.97 4380.0 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)