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91668 (1999 TD112)
Classification: Main-belt Asteroid          SPK-ID: 2091668
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0856512454336603 4.1105e-08  
a 3.118348866206745 2.9072e-08 au
q 2.851258402119494 1.37e-07 au
i 9.523511369310535 5.9565e-06 deg
node 201.4825605872956 2.6808e-05 deg
peri 94.82543291230172 4.3407e-05 deg
M 332.2085302183951 3.3945e-05 deg
tp 2459155.772480940513
(2020-Nov-02.27248094)
0.00018999 TDB
period 2011.339939119867
5.51
2.8127e-05
7.701e-08
d
yr
n .1789851595934254 2.503e-09 deg/d
Q 3.385439330293995 3.1562e-08 au
  Orbit Determination Parameters
   # obs. used (total)      685  
   data-arc span      7555 days (20.68 yr)  
   first obs. used      1999-10-04  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55824  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:40:47  

Additional Information
 Earth MOID = 1.85682 au 
 Jupiter MOID = 1.80976 au 
 T_jup = 3.190 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO280381  
diameter diameter 5.065 km 0.394 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91668 (1999 TD112)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TD112 = 2003 HH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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