Asteroid General Data

1999 TF₂₁₁ (137427)

General information

Preliminary designation	1999 TF₂₁₁
Number	137427
Group	Apollo
Absolute magnitude	15.28
Approximate diameter (m)	2 300
Approximate mass (kg)	2.33·10¹³
Number of observations	693
Arc length (days)	9477

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	313.593474
a – orbit major semiaxis (astronomical units)	2.43909800
e – orbit eccentricity	0.61190900
ω – orbit ascending node-perihelion angle (degrees)	162.403294
Ω – longitude of orbit ascending node (degrees)	347.898497
i – orbit inclination to the ecliptic plane (degrees)	39.512224

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	333.868804	2.44135291	0.63327722	158.345506	350.120723	38.025714	0.89529972	3.814578
01/21/1858	208.306262	2.42801313	0.63713598	158.698857	349.833829	38.402909	0.88103860	3.783356
01/29/1887	85.203228	2.43491854	0.63390887	158.747776	349.748227	38.338326	0.89140208	3.799507
02/07/1916	294.809261	2.44702646	0.62081259	160.016002	349.117518	38.643873	0.92788163	3.827883
02/14/1945	157.395727	2.43169351	0.62517099	160.711137	348.758936	39.105696	0.91146928	3.791961
02/22/1974	36.446480	2.43007199	0.62545599	160.703447	348.666016	39.164153	0.91016891	3.788169
03/02/2003	261.304877	2.44684011	0.61463607	161.100123	348.431506	39.008482	0.94292391	3.827445
03/09/2032	110.774833	2.43996344	0.61152025	162.451384	347.850713	39.509404	0.94787637	3.811322
03/17/2061	346.604068	2.42909863	0.61561764	162.715250	347.662482	39.830593	0.93370267	3.785893
03/25/2090	223.308157	2.43448883	0.61172781	162.779721	347.591488	39.734206	0.94524430	3.798501
04/03/2119	74.152572	2.44211327	0.60116266	164.231403	347.025495	39.942269	0.97400595	3.816360
04/10/2148	303.465298	2.42913147	0.60547926	164.775333	346.770242	40.323861	0.95834273	3.785970
04/18/2177	185.350105	2.43083281	0.60423346	164.769975	346.703536	40.337039	0.96204230	3.789948

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