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
2021-11-17 11:13:56 S 10 58 17.076 +16 38 58.16 V C57
2021-11-17 11:13:56 s 1 -166359.47 6 +187517.44 5460.0 C57
2021-11-17 11:23:56 S 10 58 18.295 +16 38 49.70 V C57
2021-11-17 11:23:56 s 1 -166460.26 8 +186819.41 150.0 C57
2021-11-17 11:33:56 S 10 58 19.087 +16 38 42.18 V C57
2021-11-17 11:33:56 s 1 -166559.67 6 +186119.82 9400.0 C57
2021-11-17 12:53:56 S 10 58 27.012 +16 37 42.35 V C57
2021-11-17 12:53:56 s 1 -167304.19 5 +180466.86 4000.0 C57
2021-11-17 13:13:56 S 10 58 28.819 +16 37 30.25 V C57
2021-11-17 13:13:56 s 1 -167475.93 1 +179037.92 6140.0 C57
2021-11-17 13:23:56 S 10 58 29.837 +16 37 21.65 V C57
2021-11-17 13:23:56 s 1 -167559.59 4 +178321.08 3560.0 C57
2021-11-17 13:43:56 S 10 58 31.637 +16 37 04.33 V C57
2021-11-17 13:43:56 s 1 -167722.46 8 +176882.67 940.0 C57
2021-11-17 13:53:56 S 10 58 32.976 +16 36 59.83 V C57
2021-11-17 13:53:56 s 1 -167801.66 1 +176161.09 830.0 C57
2021-11-17 14:03:56 S 10 58 33.418 +16 36 56.30 V C57
2021-11-17 14:03:56 s 1 -167879.34 8 +175437.92 4820.0 C57
2021-11-17 15:33:56 S 10 58 42.192 +16 35 45.20 V C57
2021-11-17 15:33:56 s 1 -168509.24 0 +168857.73 9330.0 C57
2021-11-17 15:53:56 S 10 58 44.282 +16 35 31.70 V C57
2021-11-17 15:53:56 s 1 -168631.87 6 +167377.86 9140.0 C57
2021-11-17 16:03:56 S 10 58 45.722 +16 35 24.29 V C57
2021-11-17 16:03:56 s 1 -168690.77 4 +166635.51 9580.0 C57
2021-11-17 16:13:56 S 10 58 46.142 +16 35 17.99 V C57
2021-11-17 16:13:56 s 1 -168748.04 5 +165891.56 3670.0 C57
2021-11-17 16:33:56 S 10 58 48.538 +16 35 00.38 V C57
2021-11-17 16:33:56 s 1 -168857.66 8 +164398.80 2610.0 C57
2021-11-17 16:53:56 S 10 58 50.261 +16 34 43.72 V C57
2021-11-17 16:53:56 s 1 -168960.66 6 +162899.58 5670.0 C57
2021-11-17 17:03:56 S 10 58 51.384 +16 34 38.96 V C57
2021-11-17 17:03:56 s 1 -169009.65 6 +162147.54 7400.0 C57
2021-11-17 18:23:56 S 10 58 59.458 +16 33 41.22 V C57
2021-11-17 18:23:56 s 1 -169340.00 1 +156072.70 950.0 C57
2021-11-17 18:33:56 S 10 58 59.849 +16 33 33.37 V C57
2021-11-17 18:33:56 s 1 -169373.44 0 +155306.00 2010.0 C57
2021-11-17 18:43:56 S 10 59 01.104 +16 33 25.34 V C57
2021-11-17 18:43:56 s 1 -169405.09 7 +154537.66 6130.0 C57
2021-11-17 18:53:56 S 10 59 02.100 +16 33 20.23 V C57
2021-11-17 18:53:56 s 1 -169434.96 2 +153767.69 3270.0 C57
2021-11-17 19:03:56 S 10 59 03.214 +16 33 12.38 V C57
2021-11-17 19:03:56 s 1 -169463.02 4 +152996.07 3380.0 C57
2021-11-17 19:13:56 S 10 59 04.344 +16 33 02.27 V C57
2021-11-17 19:13:56 s 1 -169489.27 0 +152222.82 6430.0 C57
2021-11-17 21:03:56 S 10 59 14.789 +16 31 47.03 V C57
2021-11-17 21:03:56 s 1 -169654.91 9 +143608.14 1050.0 C57
2021-11-17 21:13:56 S 10 59 15.653 +16 31 40.08 V C57
2021-11-17 21:13:56 s 1 -169658.48 1 +142815.05 5860.0 C57
2021-11-17 21:43:56 S 10 59 18.586 +16 31 16.50 V C57
2021-11-17 21:43:56 s 1 -169657.30 1 +140425.81 4220.0 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)