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27811 (1993 OA7)
Classification: Main-belt Asteroid          SPK-ID: 2027811
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 .1297466179089777 3.8264e-08  
a 2.412811764402623 1.0615e-08 au
q 2.09975759832039 9.0996e-08 au
i 3.398440473515943 4.3282e-06 deg
node 111.7682793351501 8.0506e-05 deg
peri 333.7845396192565 8.2858e-05 deg
M 281.854333391802 2.1226e-05 deg
tp 2459297.657016213653
(2021-Mar-24.15701621)
8.1575e-05 TDB
period 1368.937402162905
3.75
9.0337e-06
2.473e-08
d
yr
n .2629776930860419 1.7354e-09 deg/d
Q 2.725865930484857 1.1992e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1359  
   data-arc span      14056 days (38.48 yr)  
   first obs. used      1979-12-18  
   last obs. used      2018-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5069  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 18:36:22  

Additional Information
 Earth MOID = 1.11665 au 
 Jupiter MOID = 2.46103 au 
 T_jup = 3.505 
[ 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 14.6   n/a MPO449167  
diameter diameter 7.214 km 0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 13.05 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:
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.063   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27811 (1993 OA7)          Discovered 1993-Jul-20 by Elst, E. W. at La Silla
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 OA7 = 1979 YZ5 = 1990 WL12 = 1996 KT3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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