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4729 Mikhailmil' (1980 RO2)
Classification: Main-belt Asteroid          SPK-ID: 2004729
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .174114685556179 9.8786e-09  
a 2.220668399131986 4.8818e-09 au
q 1.834017419092577 2.2801e-08 au
i 2.283216777647351 5.1245e-07 deg
node 251.7471270639991 1.2392e-05 deg
peri 128.0927246774019 1.3732e-05 deg
M 102.6179282305813 6.0711e-06 deg
tp 2459051.955963682963
(2020-Jul-21.45596368)
2.0078e-05 TDB
period 1208.715233418339
3.31
3.9857e-06
1.091e-08
d
yr
n .2978369015685295 9.8212e-10 deg/d
Q 2.607319379171395 5.7317e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2830  
   data-arc span      26887 days (73.61 yr)  
   first obs. used      1947-10-18  
   last obs. used      2021-05-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:22:30  

Additional Information
 Earth MOID = .836784 au 
 Jupiter MOID = 2.85891 au 
 T_jup = 3.629 
[ 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 12.74   n/a E2021B10  
diameter diameter 5.989 km 0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 17.74 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:
[Ruthroff, J.C. (2012) Minor Planet Bull. 39, 39.]
geometric albedo albedo 0.449   0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4729 Mikhailmil' (1980 RO2)          Discovered 1980-Sep-08 by Zhuravleva, L. V. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1980 RO2 = 1947 UB = 1950 NV = 1950 QM = 1965 BD = 1985 CQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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