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202964 (1999 TH15)
Classification: Main-belt Asteroid          SPK-ID: 2202964
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09758402173182366 4.6449e-08  
a 2.601601322016665 2.3207e-08 au
q 2.34772660207145 1.2607e-07 au
i 12.36270633629669 5.66e-06 deg
node 16.4973754484898 2.2023e-05 deg
peri 198.7599302374684 3.9225e-05 deg
M 177.7850081506597 3.7143e-05 deg
tp 2458443.576168645654
(2018-Nov-21.07616865)
0.00015192 TDB
period 1532.708421942119
4.20
2.0509e-05
5.615e-08
d
yr
n .2348783335736084 3.1428e-09 deg/d
Q 2.855476041961881 2.5472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      578  
   data-arc span      7781 days (21.30 yr)  
   first obs. used      1999-09-22  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52737  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:59:33  

Additional Information
 Earth MOID = 1.34456 au 
 Jupiter MOID = 2.11489 au 
 T_jup = 3.375 
[ 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 15.43   n/a E2021B55  
diameter diameter 2.419 km 0.443 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

202964 (1999 TH15)          Discovered 1999-Oct-12 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20090111/Numbers.arcLast Updated: 2009-02-03
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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