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134489 (1998 XR38)
Classification: Main-belt Asteroid          SPK-ID: 2134489
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2065108947906839 9.8135e-08  
a 2.541456112791365 1.4058e-08 au
q 2.016617736867567 2.5357e-07 au
i 10.92070593243511 5.3759e-06 deg
node 316.0472022760904 2.6767e-05 deg
peri 64.12385188418287 2.8399e-05 deg
M 196.9858707875359 9.8034e-06 deg
tp 2459870.608452851398
(2022-Oct-18.10845285)
4.2964e-05 TDB
period 1479.865850843424
4.05
1.2279e-05
3.362e-08
d
yr
n .2432652931310119 2.0185e-09 deg/d
Q 3.066294488715164 1.6962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1211  
   data-arc span      7859 days (21.52 yr)  
   first obs. used      1998-11-16  
   last obs. used      2020-05-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47197  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:08:36  

Additional Information
 Earth MOID = 1.04345 au 
 Jupiter MOID = 2.51453 au 
 T_jup = 3.390 
[ 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 14.27   n/a E2021B55  
diameter diameter 3.362 km 0.318 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.245   0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

134489 (1998 XR38)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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