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134690 (1999 XP61)
Classification: Outer Main-belt Asteroid          SPK-ID: 2134690
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .251117275709567 4.447e-08  
a 4.006039626869167 4.4733e-08 au
q 3.000053869385211 1.7774e-07 au
i 2.847463701268816 5.4957e-06 deg
node 190.9662421971578 9.8554e-05 deg
peri 185.1433405212908 9.9089e-05 deg
M 258.8648679672914 1.2427e-05 deg
tp 2460023.255574061310
(2023-Mar-19.75557406)
0.00011143 TDB
period 2928.675730272234
8.02
4.9055e-05
1.343e-07
d
yr
n .1229224513587704 2.0589e-09 deg/d
Q 5.012025384353122 5.5967e-08 au
  Orbit Determination Parameters
   # obs. used (total)      634  
   data-arc span      10430 days (28.56 yr)  
   first obs. used      1991-12-04  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:09:29  

Additional Information
 Earth MOID = 2.00019 au 
 Jupiter MOID = .459911 au 
 T_jup = 2.995 
[ 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 14.20   n/a E2021B55  
diameter diameter 9.922 km 0.962 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.045   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

134690 (1999 XP61)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 1999 XP61 = 2002 FW27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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