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27970 (1997 TR9)
Classification: Main-belt Asteroid          SPK-ID: 2027970
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 .06066003151983047 3.5923e-08  
a 2.666219873546445 1.0511e-08 au
q 2.50448689197832 9.5874e-08 au
i .8881264179211293 3.566e-06 deg
node 252.2322631649211 0.00024926 deg
peri 79.09478629041044 0.00025133 deg
M 124.4470969162413 3.1706e-05 deg
tp 2458450.801391131645
(2018-Nov-28.30139113)
0.0001397 TDB
period 1590.165653488871
4.35
9.4036e-06
2.575e-08
d
yr
n .2263915078345135 1.3388e-09 deg/d
Q 2.827952855114571 1.1149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1228  
   data-arc span      9076 days (24.85 yr)  
   first obs. used      1995-03-27  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5561  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:47  

Additional Information
 Earth MOID = 1.49371 au 
 Jupiter MOID = 2.37528 au 
 T_jup = 3.380 
[ 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 14.9   n/a MPO449168  
diameter diameter 2.661 km 0.856 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.274   0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27970 (1997 TR9)          Discovered 1997-Oct-02 by Spacewatch at Kitt Peak
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 TR9 = 2000 JG35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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