1866 Sisyphus — IAA Minor Planet Database

Orbital Elements

Epoch (TDB)	2025-11-21 (JD 2461000.5)
Eccentricity (e)	0.5381207270 ± 5.42e-09
Semi-major axis (a)	1.8933719410 AU ± 4.50e-10
Inclination (i)	41.20633494° ± 7.87e-07
Long. of Asc. Node (Ω)	63.44668864° ± 1.04e-06
Arg. of Perihelion (ω)	293.09862767° ± 1.07e-06
Mean Anomaly (M)	140.66424737° ± 8.67e-07
Mean Motion (n)	0.3783191899°/day ± 1.35e-10
Perihelion dist (q)	0.87450926 AU ± 1.03e-08
Aphelion dist (Q)	2.91223463 AU ± 1.03e-08
Orbital Period	2.60527700 yr ± 9.28e-10

Physical Parameters

H (abs. magnitude)	12.48
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-05-31
RMS Residual	0.220″
Uncertainty	0
Orbit Type	Apollo
MOID	0.102869 AU
Observations Used	9210
Radar Obs Used	1
Gaia Obs Used	79
Oppositions	38
Arc Total	1955-2026
First Observation Used	1955-01-26
Last Observation Used	2026-04-06

Observations (11960)

Date	Type	RA	Dec	Mag	Band	Observatory
2019-07-10 17:14:30	s	1 -64998.719	0 +406026.22	8580.0	–	C57
2019-07-10 17:44:30	S	07 02 49.330	-60 00 26.68	–	V	C57
2019-07-10 17:44:30	s	1 -65979.281	0 +405904.78	9090.0	–	C57
2019-07-10 18:14:30	S	07 02 49.423	-59 59 17.27	–	V	C57
2019-07-10 18:14:30	s	1 -66958.574	0 +405775.91	8570.0	–	C57
2019-07-10 18:44:30	S	07 02 49.644	-59 58 06.06	–	V	C57
2019-07-10 18:44:30	s	1 -67936.582	0 +405639.60	7120.0	–	C57
2019-07-10 19:14:30	S	07 02 49.946	-59 56 52.76	–	V	C57
2019-07-10 19:14:30	s	1 -68913.286	0 +405495.88	4790.0	–	C57
2019-07-10 19:44:30	S	07 02 50.064	-59 55 43.68	–	V	C57
2019-07-10 19:44:30	s	1 -69888.669	0 +405344.73	1650.0	–	C57
2019-07-10 20:14:30	S	07 02 50.232	-59 54 30.49	–	V	C57
2019-07-10 20:14:30	s	1 -70862.712	0 +405186.16	7790.0	–	C57
2019-07-10 23:14:30	S	07 02 51.403	-59 47 26.02	–	V	C57
2019-07-10 23:14:30	s	1 -76677.844	0 +404079.18	3100.0	–	C57
2019-07-10 23:44:30	S	07 02 51.689	-59 46 13.84	–	V	C57
2019-07-10 23:44:30	s	1 -77642.010	0 +403868.78	6060.0	–	C57
2019-07-11 00:14:30	S	07 02 51.914	-59 45 01.80	–	V	C57
2019-07-11 00:14:30	s	1 -78604.694	0 +403651.00	8840.0	–	C57
2019-07-11 00:44:30	S	07 02 52.046	-59 43 52.82	–	V	C57
2019-07-11 00:44:30	s	1 -79565.876	0 +403425.82	1510.0	–	C57
2019-07-11 01:14:30	S	07 02 52.229	-59 42 40.61	–	V	C57
2019-07-11 01:14:30	s	1 -80525.539	0 +403193.25	4160.0	–	C57
2019-07-11 01:44:30	S	07 02 52.510	-59 41 30.98	–	V	C57
2019-07-11 01:44:30	s	1 -81483.665	0 +402953.29	6830.0	–	C57
2019-07-11 02:14:30	S	07 02 52.651	-59 40 17.62	–	V	C57
2019-07-11 02:14:30	s	1 -82440.235	0 +402705.96	9610.0	–	C57
2019-07-11 02:44:30	S	07 02 52.757	-59 39 08.14	–	V	C57
2019-07-11 02:44:30	s	1 -83395.232	0 +402451.24	2560.0	–	C57
2019-07-11 03:14:30	S	07 02 53.074	-59 37 56.96	–	V	C57
2019-07-11 03:14:30	s	1 -84348.636	0 +402189.14	5760.0	–	C57
2019-07-11 03:44:30	S	07 02 53.242	-59 36 46.15	–	V	C57
2019-07-11 03:44:30	s	1 -85300.431	0 +401919.67	9270.0	–	C57
2019-07-11 04:14:30	S	07 02 53.354	-59 35 36.02	–	V	C57
2019-07-11 04:14:30	s	1 -86250.596	0 +401642.81	3170.0	–	C57
2019-07-11 04:44:30	S	07 02 53.638	-59 34 23.63	–	V	C57
2019-07-11 04:44:30	s	1 -87199.115	0 +401358.59	7520.0	–	C57
2019-07-11 05:14:30	S	07 02 53.849	-59 33 12.60	–	V	C57
2019-07-11 05:14:30	s	1 -88145.968	0 +401066.99	2390.0	–	C57
2019-07-11 05:44:30	S	07 02 53.957	-59 32 01.90	–	V	C57
2019-07-11 05:44:30	s	1 -89091.138	0 +400768.01	7850.0	–	C57
2019-07-11 06:14:30	S	07 02 54.163	-59 30 51.77	–	V	C57
2019-07-11 06:14:30	s	1 -90034.605	0 +400461.67	6020.0	–	C57
2019-07-11 06:44:30	S	07 02 54.439	-59 29 41.21	–	V	C57
2019-07-11 06:44:30	s	1 -90976.351	0 +400147.96	9160.0	–	C57
2019-07-11 07:14:30	S	07 02 54.564	-59 28 28.45	–	V	C57
2019-07-11 07:14:30	s	1 -91916.357	0 +399826.87	1500.0	–	C57
2019-07-11 07:44:30	S	07 02 54.708	-59 27 20.41	–	V	C57
2019-07-11 07:44:30	s	1 -92854.605	0 +399498.42	2960.0	–	C57
2019-07-11 08:14:30	S	07 02 55.018	-59 26 06.76	–	V	C57

« Prev 1 2 … 115 116 117 … 239 240 Next » 11960 observations

Epoch (UTC)	Value	Sigma	Units	Freq (MHz)	Receiver	Transmitter
1985-12-08 00:00:00	-295248	20	Hz	2380	-1	-1
1985-12-08.000000	-29524800	2000	Hz	2380	251	251

1866 Sisyphus (1972 XA)