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JPL Small-Body Database Browser
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27253 Graceleanor (1999 XC28)
Classification: Main-belt Asteroid          SPK-ID: 2027253
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1349512380478947 3.7574e-08  
a 2.389077759869746 1.0198e-08 au
q 2.066668758382633 8.9908e-08 au
i 1.795770439606664 3.969e-06 deg
node 223.2242236982776 0.0001378 deg
peri 277.954847617488 0.00013865 deg
M 19.60391444533049 1.4721e-05 deg
tp 2458527.051293349123
(2019-Feb-12.55129335)
5.5125e-05 TDB
period 1348.788501809333
3.69
8.6365e-06
2.365e-08
d
yr
n .2669061899008464 1.709e-09 deg/d
Q 2.711486761356859 1.1575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      807  
   data-arc span      8565 days (23.45 yr)  
   first obs. used      1995-10-18  
   last obs. used      2019-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54483  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:02:35  

Additional Information
 Earth MOID = 1.0809 au 
 Jupiter MOID = 2.30943 au 
 T_jup = 3.520 
[ 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 15.7   n/a MPO421865  
diameter diameter 4.340 km 0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27253 Graceleanor           Discovered 1999 Dec. 6 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Grace Eleanor Phillips (b. 1993) was a finalist in the 2010 Intel Science Talent Search, a science competition for high-school seniors, for her plant-sciences project. She attends the Mamaroneck High School, Mamaroneck, New York, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110319/MPCPages.arcLast Updated: 2011-03-23

[ show close-approach data ]
Alternate Designations
 1999 XC28 = 1999 VJ70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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