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108284 (2001 HC61)
Classification: Main-belt Asteroid          SPK-ID: 2108284
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1134158697685781 5.6001e-08  
a 2.756928780544399 2.5572e-08 au
q 2.444249305008931 1.6285e-07 au
i 12.44876085884942 5.3113e-06 deg
node 122.908567972323 2.837e-05 deg
peri 172.3787423362951 3.9265e-05 deg
M 358.4576060680274 2.8976e-05 deg
tp 2459007.663570755511
(2020-Jun-07.16357076)
0.00013461 TDB
period 1672.001826852188
4.58
2.3263e-05
6.369e-08
d
yr
n .2153107695329244 2.9956e-09 deg/d
Q 3.069608256079868 2.8472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      569  
   data-arc span      7064 days (19.34 yr)  
   first obs. used      2000-01-05  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61283  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:45:12  

Additional Information
 Earth MOID = 1.42893 au 
 Jupiter MOID = 2.15058 au 
 T_jup = 3.300 
[ 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 MPO345026  
diameter diameter 2.847 km 0.316 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.315   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108284 (2001 HC61)          Discovered 2001-Apr-24 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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