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JPL Small-Body Database Browser
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80275 (1999 XY31)
Classification: Main-belt Asteroid          SPK-ID: 2080275
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1681315382130612 3.3947e-08  
a 2.441986775955827 8.7506e-09 au
q 2.031411783018419 8.1973e-08 au
i 1.579468623902854 3.5349e-06 deg
node 205.994804730277 0.00014833 deg
peri 244.0899672385951 0.00014875 deg
M 48.02919998538586 1.1009e-05 deg
tp 2458414.541411732512
(2018-Oct-23.04141173)
4.2484e-05 TDB
period 1393.841492189447
3.82
7.4921e-06
2.051e-08
d
yr
n .2582790094980684 1.3883e-09 deg/d
Q 2.852561768893234 1.0222e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1045  
   data-arc span      7557 days (20.69 yr)  
   first obs. used      1998-08-29  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51538  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:49:26  

Additional Information
 Earth MOID = 1.04855 au 
 Jupiter MOID = 2.34329 au 
 T_jup = 3.481 
[ 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 15.4   n/a MPO474692  
diameter diameter 2.245 km 0.350 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.398 h n/a LCDB (Rev. 2019-January); 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 0.266   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

80275 (1999 XY31)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1999 XY31 = 2002 PH61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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