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JPL Small-Body Database Browser
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91207 (1998 XW27)
Classification: Main-belt Asteroid          SPK-ID: 2091207
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1276253365125555 3.8644e-08  
a 3.196622626832802 3.1886e-08 au
q 2.788652588379617 1.1982e-07 au
i 9.974085954082076 7.1054e-06 deg
node 346.0266006673991 2.6381e-05 deg
peri 54.17357850204512 3.8763e-05 deg
M 294.6697082529622 2.8681e-05 deg
tp 2459379.332803176355
(2021-Jun-13.83280318)
0.00016736 TDB
period 2087.543243669526
5.72
3.1234e-05
8.551e-08
d
yr
n .1724515173957233 2.5803e-09 deg/d
Q 3.604592665285987 3.5955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      830  
   data-arc span      9342 days (25.58 yr)  
   first obs. used      1992-10-19  
   last obs. used      2018-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57518  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 03:22:16  

Additional Information
 Earth MOID = 1.8099 au 
 Jupiter MOID = 1.95636 au 
 T_jup = 3.159 
[ 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 13.9   n/a MPO432450  
diameter diameter 10.524 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91207 (1998 XW27)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 XW27 = 2000 EN77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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