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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2149586678789452 4.9908e-08  
a 3.983540458171445 3.3518e-08 au
q 3.127243907841028 2.0425e-07 au
i 4.520810171196659 5.8491e-06 deg
node 28.67614298623871 6.0928e-05 deg
peri 4.678175043631702 6.2094e-05 deg
M 60.38505303022846 1.1024e-05 deg
tp 2458909.387553440228
(2020-Feb-29.88755344)
8.762e-05 TDB
period 2904.037869665089
7.95
3.6652e-05
1.003e-07
d
yr
n .1239653255766659 1.5646e-09 deg/d
Q 4.839837008501862 4.0723e-08 au
  Orbit Determination Parameters
   # obs. used (total)      841  
   data-arc span      9304 days (25.47 yr)  
   first obs. used      1995-08-29  
   last obs. used      2021-02-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51871  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:51:01  

Additional Information
 Earth MOID = 2.13297 au 
 Jupiter MOID = .623496 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 13.65   n/a E2021B10  
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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