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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2063132449869114 9.825e-08  
a 2.541883511401498 1.4115e-08 au
q 2.01745927578553 2.5394e-07 au
i 10.92052676369414 5.4132e-06 deg
node 316.0459965635058 2.6873e-05 deg
peri 64.14097292201289 2.852e-05 deg
M 148.3184220874667 9.7013e-06 deg
tp 2458390.647949245153
(2018-Sep-29.14794925)
3.8187e-05 TDB
period 1480.239171788607
4.05
1.233e-05
3.376e-08
d
yr
n .2432039408638292 2.0258e-09 deg/d
Q 3.066307747017466 1.7028e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1177  
   data-arc span      7832 days (21.44 yr)  
   first obs. used      1998-11-16  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47127  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:20:01  

Additional Information
 Earth MOID = 1.04565 au 
 Jupiter MOID = 2.51351 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 14.3   n/a MPO502849  
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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