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JPL Small-Body Database Browser
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27257 Tang-Quan (1999 XG34)
Classification: Main-belt Asteroid          SPK-ID: 2027257
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1282364083476858 4.5699e-08  
a 2.287257336516464 8.7006e-09 au
q 1.993947670714698 1.0486e-07 au
i 6.790261148295114 3.7218e-06 deg
node 119.0040550158554 4.3132e-05 deg
peri 100.2684595888228 4.6232e-05 deg
M 135.420090813341 1.8905e-05 deg
tp 2458125.217776910532
(2018-Jan-06.71777691)
6.5323e-05 TDB
period 1263.487561443521
3.46
7.2093e-06
1.974e-08
d
yr
n .284925638356664 1.6258e-09 deg/d
Q 2.580567002318229 9.8163e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1093  
   data-arc span      11810 days (32.33 yr)  
   first obs. used      1987-07-28  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50536  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:02:16  

Additional Information
 Earth MOID = .999411 au 
 Jupiter MOID = 2.41477 au 
 T_jup = 3.581 
[ 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 14.8   n/a MPO302226  
diameter diameter 2.963 km 0.680 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.291   0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27257 Tang-Quan           Discovered 1999 Dec. 6 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
David Kenneth Tang-Quan (b. 1992) was a finalist in the 2010 Intel Science Talent Search, a science competition for high-school seniors, for his microbiology project. He attends the Palos Verdes Peninsula High School, Rolling Hills Estates, California, 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

Alternate Designations
 1999 XG34 = 1987 OD1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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