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JPL Small-Body Database Browser
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10277 Micheli (1981 EC27)
Classification: Main-belt Asteroid          SPK-ID: 2010277
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09113539127400748 3.7115e-08  
a 2.715175988487766 1.1218e-08 au
q 2.467727362399144 9.9853e-08 au
i 1.447409382192752 3.4497e-06 deg
node 128.9924246565587 0.00016115 deg
peri 254.714325850899 0.00016272 deg
M 67.51924081543662 2.0315e-05 deg
tp 2458694.007075554234
(2019-Jul-29.50707555)
9.2477e-05 TDB
period 1634.1631136239
4.47
1.0127e-05
2.773e-08
d
yr
n .2202962464387466 1.3652e-09 deg/d
Q 2.962624614576388 1.224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1771  
   data-arc span      14234 days (38.97 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52814  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:38:39  

Additional Information
 Earth MOID = 1.47148 au 
 Jupiter MOID = 2.45137 au 
 T_jup = 3.355 
[ 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 14.0   n/a MPO502247  
diameter diameter 8.819 km 0.278 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.334 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 0.069   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

10277 Micheli           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Marco Micheli (b. 1983) is a researcher at the European Space Agency Space Situational Awareness Near-Earth Object Coordination Centre and a member of the Pan-STARRS1 survey's near-Earth object search team studying meteor streams.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-04-19

[ show close-approach data ]
Alternate Designations
 1981 EC27 = 1987 QN5 = 1992 UT7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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