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91720 (1999 TJ156)
Classification: Main-belt Asteroid          SPK-ID: 2091720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .113320220531403 4.4135e-08  
a 3.180367852970645 2.444e-08 au
q 2.819967866501027 1.4013e-07 au
i 6.442190060683372 4.9477e-06 deg
node 86.63680456714327 5.3192e-05 deg
peri 23.93903322777845 6.0375e-05 deg
M 179.0827616476233 2.7745e-05 deg
tp 2457969.957892367863
(2017-Aug-04.45789237)
0.00015929 TDB
period 2071.64081754316
5.67
2.388e-05
6.538e-08
d
yr
n .1737752977984563 2.0031e-09 deg/d
Q 3.540767839440263 2.7209e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1073  
   data-arc span      7156 days (19.59 yr)  
   first obs. used      1999-10-07  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52243  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:30  

Additional Information
 Earth MOID = 1.83819 au 
 Jupiter MOID = 1.59045 au 
 T_jup = 3.180 
[ 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 13.7   n/a MPO359385  
diameter diameter 8.828 km 0.317 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.099   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91720 (1999 TJ156)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TJ156 = 2000 AY99 = 2001 CZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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