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91812 (1999 TQ252)
Classification: Main-belt Asteroid          SPK-ID: 2091812
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1449666743546986 3.5894e-08  
a 2.81106758698266 1.3148e-08 au
q 2.403556467511497 9.9292e-08 au
i 2.855928375869948 5.3903e-06 deg
node 317.1896520539887 8.5216e-05 deg
peri 111.7897898627129 8.8628e-05 deg
M 82.41864238508167 2.1767e-05 deg
tp 2458606.380145399191
(2019-May-02.88014540)
0.00010386 TDB
period 1721.493384874938
4.71
1.2077e-05
3.307e-08
d
yr
n .2091207571071516 1.4671e-09 deg/d
Q 3.218578706453824 1.5054e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1012  
   data-arc span      8419 days (23.05 yr)  
   first obs. used      1997-04-03  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:43:37  

Additional Information
 Earth MOID = 1.41959 au 
 Jupiter MOID = 2.06574 au 
 T_jup = 3.304 
[ 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 MPO453358  
diameter diameter 2.346 km 0.284 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.352   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91812 (1999 TQ252)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 TQ252 = 2001 AM16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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