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70401 Davidbishop (1999 RH241)
Classification: Main-belt Asteroid          SPK-ID: 2070401
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1960609918355993 5.0499e-08  
a 2.517935225496521 1.3637e-08 au
q 2.02426634780788 1.2555e-07 au
i 8.416620833389659 5.017e-06 deg
node 118.6611030733924 9.1903e-05 deg
peri 150.1106664453142 0.00010319 deg
M 139.0871298950736 4.9132e-05 deg
tp 2458436.668024021546
(2018-Nov-14.16802402)
0.0001989 TDB
period 1459.369472253615
4.00
1.1855e-05
3.246e-08
d
yr
n .2466818765532171 2.004e-09 deg/d
Q 3.011604103185163 1.631e-08 au
  Orbit Determination Parameters
   # obs. used (total)      762  
   data-arc span      25462 days (69.71 yr)  
   first obs. used      1950-04-22  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55473  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:20:44  

Additional Information
 Earth MOID = 1.01293 au 
 Jupiter MOID = 2.11788 au 
 T_jup = 3.416 
[ 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 15.3   n/a MPO347974  
diameter diameter 2.215 km 0.488 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.794 h n/a LCDB (Rev. 2019-August); 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 0.360   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70401 Davidbishop           Discovered 1999 Sept. 13 at Cottage Grove.
David Bishop (b. 1961) is an engineer who works with cutting-edge CMOS and other imaging technology. For many years he has donated his time and tirelessly maintained the only webpage that provides up-to-date reports and images of all supernova discoveries. This is used daily by hundreds of astronomers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090209/MPCPages.arcLast Updated: 2009-02-11

[ show close-approach data ]
Alternate Designations
 1999 RH241 = 2002 EK9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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