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85577 (1998 DC2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2085577
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 .2144770442141912 6.1248e-08  
a 3.980980786929534 3.5458e-08 au
q 3.127151794675403 2.5365e-07 au
i 4.521471116655796 6.4449e-06 deg
node 28.68931892153465 6.4246e-05 deg
peri 4.603546720970285 6.5395e-05 deg
M 11.35292111597899 1.1839e-05 deg
tp 2458909.006831327899
(2020-Feb-29.50683133)
9.5057e-05 TDB
period 2901.239283306351
7.94
3.8761e-05
1.061e-07
d
yr
n .124084904706561 1.6578e-09 deg/d
Q 4.834809779183666 4.3062e-08 au
  Orbit Determination Parameters
   # obs. used (total)      716  
   data-arc span      9103 days (24.92 yr)  
   first obs. used      1995-08-29  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52962  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:56:13  

Additional Information
 Earth MOID = 2.13352 au 
 Jupiter MOID = .626226 au 
 T_jup = 3.010 
[ 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 13.6   n/a MPO502666  
diameter diameter 10.811 km 0.721 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.042   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

85577 (1998 DC2)          Discovered 1998-Feb-21 by Galad, A., Pravda, A. at Modra
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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