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22897 (1999 TH7)
Classification: Main-belt Asteroid          SPK-ID: 2022897
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .057910733012248 3.5204e-08  
a 2.359789134197041 7.435e-09 au
q 2.223132015681352 8.2123e-08 au
i 5.94381268898013 3.492e-06 deg
node 211.9144402260099 3.4787e-05 deg
peri 286.3131136018816 4.5753e-05 deg
M 197.3715174055 3.0669e-05 deg
tp 2459798.639290906986
(2022-Aug-07.13929091)
0.00011325 TDB
period 1324.061697503641
3.63
6.2576e-06
1.713e-08
d
yr
n .2718906533424664 1.285e-09 deg/d
Q 2.496446252712729 7.8656e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2133  
   data-arc span      14303 days (39.16 yr)  
   first obs. used      1981-10-25  
   last obs. used      2020-12-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47177  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:14:28  

Additional Information
 Earth MOID = 1.2442 au 
 Jupiter MOID = 2.51503 au 
 T_jup = 3.542 
[ 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 14.33   n/a E2021B10  
diameter diameter 3.477 km 0.432 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.335   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

22897 (1999 TH7)          Discovered 1999-Oct-06 by Korlevic, K., Juric, M. at Visnjan
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TH7 = 1981 UO = 1992 WF10 = 1994 JK8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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