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39512 (1985 TA1)
Classification: Main-belt Asteroid          SPK-ID: 2039512
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2306406251944493 4.1576e-08  
a 2.359737665035651 8.3785e-09 au
q 1.815486294676939 9.693e-08 au
i 2.047116554698758 4.4208e-06 deg
node 197.1809284776433 9.7065e-05 deg
peri 176.8627249907716 9.7418e-05 deg
M 93.61409222096299 7.4569e-06 deg
tp 2458256.203392620226
(2018-May-17.70339262)
2.6815e-05 TDB
period 1324.018379243156
3.62
7.0516e-06
1.931e-08
d
yr
n .2718995488610857 1.4481e-09 deg/d
Q 2.903989035394364 1.0311e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1128  
   data-arc span      12199 days (33.40 yr)  
   first obs. used      1985-10-15  
   last obs. used      2019-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57007  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:07:04  

Additional Information
 Earth MOID = .815465 au 
 Jupiter MOID = 2.55752 au 
 T_jup = 3.515 
[ 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 15.1   n/a MPO309459  
diameter diameter 2.294 km 0.334 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.368   0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39512 (1985 TA1)          Discovered 1985-Oct-15 by Bowell, E. at Anderson Mesa
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1985 TA1 = 2001 AZ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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