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85610 (1998 HC11)
Classification: Outer Main-belt Asteroid          SPK-ID: 2085610
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09605027506382853 6.344e-08  
a 3.231167141944177 3.7154e-08 au
q 2.920812649183234 2.1114e-07 au
i 6.391424641557976 6.5213e-06 deg
node 76.23163270478113 6.4503e-05 deg
peri 157.7786220436378 7.503e-05 deg
M 205.1523392677781 4.1311e-05 deg
tp 2459513.014366604631
(2021-Oct-25.51436660)
0.00025168 TDB
period 2121.473262329427
5.81
3.6591e-05
1.002e-07
d
yr
n .1696933948649966 2.9268e-09 deg/d
Q 3.54152163470512 4.0722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      282  
   data-arc span      7565 days (20.71 yr)  
   first obs. used      1998-04-17  
   last obs. used      2019-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66614  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:28:08  

Additional Information
 Earth MOID = 1.91048 au 
 Jupiter MOID = 1.46229 au 
 T_jup = 3.169 
[ 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 15.2   n/a MPO344891  
diameter diameter 5.699 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85610 (1998 HC11)          Discovered 1998-Apr-17 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 HC11 = 2001 YM54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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