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134691 (1999 XR61)
Classification: Main-belt Asteroid          SPK-ID: 2134691
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1818197810097202 3.5693e-08  
a 2.43713914448065 1.3171e-08 au
q 1.994019038940962 8.5746e-08 au
i 2.098648026062363 4.6152e-06 deg
node 182.9794115097544 0.00011684 deg
peri 145.9381341592389 0.00011781 deg
M 220.5319307004724 1.8158e-05 deg
tp 2459538.882832243758
(2021-Nov-20.38283224)
7.2877e-05 TDB
period 1389.693143249164
3.80
1.1265e-05
3.084e-08
d
yr
n .2590499936973886 2.0999e-09 deg/d
Q 2.880259250020339 1.5565e-08 au
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      9500 days (26.01 yr)  
   first obs. used      1994-04-15  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55864  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:22:19  

Additional Information
 Earth MOID = .983305 au 
 Jupiter MOID = 2.46765 au 
 T_jup = 3.480 
[ 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 15.8   n/a MPO268072  
diameter diameter 1.492 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.416   0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

134691 (1999 XR61)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 1999 XR61 = 2003 YF98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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