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85904 (1999 CH70)
Classification: Main-belt Asteroid          SPK-ID: 2085904
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07623893707371657 4.4367e-08  
a 2.627610446316967 1.3482e-08 au
q 2.427284218845967 1.1669e-07 au
i 6.534947308657086 3.817e-06 deg
node 256.7795346713057 4.4946e-05 deg
peri 212.0764464603367 5.8007e-05 deg
M 31.45166732814229 3.5496e-05 deg
tp 2458864.580718793212
(2020-Jan-16.08071879)
0.00015329 TDB
period 1555.750311229491
4.26
1.1974e-05
3.278e-08
d
yr
n .2313996001810189 1.7809e-09 deg/d
Q 2.827936673787967 1.451e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1020  
   data-arc span      7772 days (21.28 yr)  
   first obs. used      1999-01-15  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56344  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:40:57  

Additional Information
 Earth MOID = 1.44688 au 
 Jupiter MOID = 2.29179 au 
 T_jup = 3.388 
[ 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 15.0   n/a MPO359342  
diameter diameter 3.854 km 0.500 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.019 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.130   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

85904 (1999 CH70)          Discovered 1999-Feb-12 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 CH70 = 2001 PP40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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