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70498 (1999 TN91)
Classification: Main-belt Asteroid          SPK-ID: 2070498
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 .1049121429922828 3.2988e-08  
a 2.363936853887916 9.1328e-09 au
q 2.1159311726481 7.7625e-08 au
i 5.881741650853593 4.3629e-06 deg
node 152.985037678036 3.6329e-05 deg
peri 303.6247560856643 4.2515e-05 deg
M 172.4016108630215 2.2048e-05 deg
tp 2458364.743143604090
(2018-Sep-03.24314360)
8.0213e-05 TDB
period 1327.554117138581
3.63
7.6933e-06
2.106e-08
d
yr
n .2711753858862992 1.5715e-09 deg/d
Q 2.611942535127732 1.0091e-08 au
  Orbit Determination Parameters
   # obs. used (total)      875  
   data-arc span      8700 days (23.82 yr)  
   first obs. used      1995-07-03  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58063  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:41:17  

Additional Information
 Earth MOID = 1.13927 au 
 Jupiter MOID = 2.51667 au 
 T_jup = 3.535 
[ 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 15.7   n/a MPO474583  
diameter diameter 2.072 km 0.623 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.180   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70498 (1999 TN91)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TN91 = 1999 TD323 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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