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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1648149887983518 1.119e-07  
a 2.756970940459962 2.6983e-08 au
q 2.302580805790672 3.1319e-07 au
i 8.924168473036103 1.091e-05 deg
node 44.33913550262257 6.496e-05 deg
peri 176.9661782467628 7.1514e-05 deg
M 337.9852408422774 3.0191e-05 deg
tp 2458702.748782972924
(2019-Aug-07.24878297)
0.00014043 TDB
period 1672.040180250632
4.58
2.4546e-05
6.72e-08
d
yr
n .2153058307163632 3.1608e-09 deg/d
Q 3.211361075129252 3.143e-08 au
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      6579 days (18.01 yr)  
   first obs. used      2001-04-24  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52418  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 09:23:34  

Additional Information
 Earth MOID = 1.29442 au 
 Jupiter MOID = 1.76478 au 
 T_jup = 3.306 
[ 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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