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70536 (1999 TW121)
Classification: Main-belt Asteroid          SPK-ID: 2070536
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1141024522914307 2.1592e-07  
a 2.527099397666402 1.1136e-08 au
q 2.238751159208468 5.4816e-07 au
i 5.412855161441311 4.8937e-06 deg
node 341.2957710284131 3.7195e-05 deg
peri 193.8119038030586 4.4308e-05 deg
M 258.395576449346 4.0263e-05 deg
tp 2459414.635088574386
(2021-Jul-19.13508857)
0.00016524 TDB
period 1467.343907644454
4.02
9.6994e-06
2.656e-08
d
yr
n .2453412578499832 1.6218e-09 deg/d
Q 2.815447636124336 1.2407e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1424  
   data-arc span      15970 days (43.72 yr)  
   first obs. used      1977-02-19  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52788  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:05:36  

Additional Information
 Earth MOID = 1.244 au 
 Jupiter MOID = 2.15505 au 
 T_jup = 3.438 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO502590  
diameter diameter 4.068 km 0.483 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.185   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70536 (1999 TW121)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TW121 = 1977 DR5 = 1993 DY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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