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70441 (1999 TH8)
Classification: Main-belt Asteroid          SPK-ID: 2070441
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2111592834018723 3.1465e-08  
a 2.36094597058638 8.1252e-09 au
q 1.862410311286822 7.5132e-08 au
i 3.956356735533107 3.7144e-06 deg
node 279.1318883734399 6.4516e-05 deg
peri 139.3817180989264 6.5605e-05 deg
M 229.2199219799005 1.2545e-05 deg
tp 2459481.856223247303
(2021-Sep-24.35622325)
4.7571e-05 TDB
period 1325.035456412532
3.63
6.8402e-06
1.873e-08
d
yr
n .2716908428810518 1.4025e-09 deg/d
Q 2.859481629885938 9.8409e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1169  
   data-arc span      8693 days (23.80 yr)  
   first obs. used      1995-07-23  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52036  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:10:44  

Additional Information
 Earth MOID = .877004 au 
 Jupiter MOID = 2.48679 au 
 T_jup = 3.518 
[ 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 15.4   n/a MPO337793  
diameter diameter 3.843 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.099   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

70441 (1999 TH8)          Discovered 1999-Oct-07 by Juels, C. W. at Fountain Hills
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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