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344189 (2001 HJ61)
Classification: Main-belt Asteroid          SPK-ID: 2344189
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656147807151107 6.4158e-08  
a 2.758593050087588 2.3999e-08 au
q 2.301729267015103 1.7052e-07 au
i 8.918766517387759 6.2497e-06 deg
node 44.3000140414531 5.5684e-05 deg
peri 176.9247727842863 6.2524e-05 deg
M 64.08979554973621 2.7319e-05 deg
tp 2458702.568605860199
(2019-Aug-07.06860586)
0.00012709 TDB
period 1673.5160561886
4.58
2.1839e-05
5.979e-08
d
yr
n .2151159522304751 2.8072e-09 deg/d
Q 3.215456833160072 2.7974e-08 au
  Orbit Determination Parameters
   # obs. used (total)      231  
   data-arc span      7087 days (19.40 yr)  
   first obs. used      2001-04-24  
   last obs. used      2020-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51041  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 17:03:25  

Additional Information
 Earth MOID = 1.29348 au 
 Jupiter MOID = 1.75994 au 
 T_jup = 3.305 
[ 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 16.4   n/a MPO391763  
diameter diameter 3.089 km 0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

344189 (2001 HJ61)          Discovered 2001-Apr-24 by Spacewatch at Kitt Peak
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

[ show close-approach data ]
Alternate Designations
 2001 HJ61 = 2010 EX108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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