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
2021-12-14 00:13:54 s 1 -172240.64 8 +203850.04 770.0 C57
2021-12-14 00:23:54 S 12 05 52.764 +07 40 02.60 V C57
2021-12-14 00:23:54 s 1 -172359.92 8 +203197.38 6680.0 C57
2021-12-14 00:43:54 S 12 05 54.857 +07 39 39.92 V C57
2021-12-14 00:43:54 s 1 -172594.99 9 +201887.96 3010.0 C57
2021-12-14 00:53:54 S 12 05 56.285 +07 39 28.66 V C57
2021-12-14 00:53:54 s 1 -172710.78 0 +201231.19 3380.0 C57
2021-12-14 01:43:54 S 12 06 01.438 +07 38 48.16 V C57
2021-12-14 01:43:54 s 1 -173271.89 8 +197926.74 6240.0 C57
2021-12-14 01:53:54 S 12 06 02.263 +07 38 36.20 V C57
2021-12-14 01:53:54 s 1 -173380.52 2 +197261.71 4840.0 C57
2021-12-14 02:03:54 S 12 06 03.521 +07 38 27.49 V C57
2021-12-14 02:03:54 s 1 -173487.93 2 +196595.31 8060.0 C57
2021-12-14 02:13:54 S 12 06 04.488 +07 38 13.81 V C57
2021-12-14 02:13:54 s 1 -173594.12 2 +195927.52 5870.0 C57
2021-12-14 02:23:54 S 12 06 05.604 +07 38 03.55 V C57
2021-12-14 02:23:54 s 1 -173699.08 6 +195258.35 8240.0 C57
2021-12-14 02:33:54 S 12 06 06.641 +07 37 54.26 V C57
2021-12-14 02:33:54 s 1 -173802.81 7 +194587.79 5150.0 C57
2021-12-14 02:43:54 S 12 06 07.654 +07 37 43.36 V C57
2021-12-14 02:43:54 s 1 -173905.31 0 +193915.84 6580.0 C57
2021-12-14 02:53:54 S 12 06 08.666 +07 37 35.51 V C57
2021-12-14 02:53:54 s 1 -174006.55 7 +193242.51 2490.0 C57
2021-12-14 03:03:54 S 12 06 09.720 +07 37 23.16 V C57
2021-12-14 03:03:54 s 1 -174106.55 2 +192567.78 2850.0 C57
2021-12-14 03:13:54 S 12 06 10.867 +07 37 09.44 V C57
2021-12-14 03:13:54 s 1 -174205.29 0 +191891.66 7650.0 C57
2021-12-14 03:23:54 S 12 06 11.964 +07 37 03.29 V C57
2021-12-14 03:23:54 s 1 -174302.76 3 +191214.15 6850.0 C57
2021-12-14 04:13:54 S 12 06 17.002 +07 36 14.65 V C57
2021-12-14 04:13:54 s 1 -174770.93 3 +187805.65 7960.0 C57
2021-12-14 04:23:54 S 12 06 18.173 +07 36 05.51 V C57
2021-12-14 04:23:54 s 1 -174860.68 1 +187119.76 3000.0 C57
2021-12-14 04:33:54 S 12 06 19.174 +07 35 53.99 V C57
2021-12-14 04:33:54 s 1 -174949.11 8 +186432.45 2260.0 C57
2021-12-14 04:43:54 S 12 06 20.342 +07 35 42.00 V C57
2021-12-14 04:43:54 s 1 -175036.23 8 +185743.75 5690.0 C57
2021-12-14 04:53:54 S 12 06 21.434 +07 35 33.47 V C57
2021-12-14 04:53:54 s 1 -175122.03 2 +185053.63 3280.0 C57
2021-12-14 05:03:54 S 12 06 22.411 +07 35 23.50 V C57
2021-12-14 05:03:54 s 1 -175206.49 6 +184362.11 4980.0 C57
2021-12-14 05:13:54 S 12 06 23.573 +07 35 11.18 V C57
2021-12-14 05:13:54 s 1 -175289.62 0 +183669.18 780.0 C57
2021-12-14 05:23:54 S 12 06 24.542 +07 35 04.67 V C57
2021-12-14 05:23:54 s 1 -175371.40 0 +182974.84 640.0 C57
2021-12-14 05:33:54 S 12 06 25.776 +07 34 52.46 V C57
2021-12-14 05:33:54 s 1 -175451.82 6 +182279.09 4540.0 C57
2021-12-14 05:43:54 S 12 06 26.887 +07 34 47.39 V C57
2021-12-14 05:43:54 s 1 -175530.89 3 +181581.93 2440.0 C57
2021-12-14 05:53:54 S 12 06 27.514 +07 34 29.28 V 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)