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180733 (2004 JH42)
Classification: Main-belt Asteroid          SPK-ID: 2180733
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1157458954628049 6.5305e-08  
a 2.91184298730931 1.6233e-08 au
q 2.574809113296105 1.88e-07 au
i 9.612373750645132 5.1559e-06 deg
node 213.8582252982588 2.342e-05 deg
peri 113.9619233261788 5.5723e-05 deg
M 39.37980152579429 4.2182e-05 deg
tp 2459001.972177636570
(2020-Jun-01.47217764)
0.00021245 TDB
period 1814.890204665479
4.97
1.5177e-05
4.155e-08
d
yr
n .1983591068344299 1.6587e-09 deg/d
Q 3.248876861322514 1.8112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      557  
   data-arc span      7459 days (20.42 yr)  
   first obs. used      2000-08-31  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51503  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:27:43  

Additional Information
 Earth MOID = 1.58114 au 
 Jupiter MOID = 2.13531 au 
 T_jup = 3.252 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.58   n/a E2021B55  
diameter diameter 2.339 km 0.378 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.418 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.223   0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

180733 (2004 JH42)          Discovered 2004-May-15 by Needville at Needville
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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