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49397 (1998 XU40)
Classification: Main-belt Asteroid          SPK-ID: 2049397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1528487862657193 3.8518e-08  
a 2.637211645427999 1.1688e-08 au
q 2.234117046298509 1.0516e-07 au
i 13.45559234208727 4.771e-06 deg
node 69.85974996782399 1.5642e-05 deg
peri 34.82741664946903 2.2135e-05 deg
M 259.0144025506111 1.5454e-05 deg
tp 2459039.306288254372
(2020-Jul-08.80628825)
6.8155e-05 TDB
period 1564.285083828358
4.28
1.0399e-05
2.847e-08
d
yr
n .2301370790540001 1.5299e-09 deg/d
Q 3.04030624455749 1.3474e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1281  
   data-arc span      7659 days (20.97 yr)  
   first obs. used      1998-12-14  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47887  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:19:23  

Additional Information
 Earth MOID = 1.26358 au 
 Jupiter MOID = 2.20352 au 
 T_jup = 3.342 
[ 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 14.1   n/a MPO359072  
diameter diameter 4.366 km 0.970 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.233   0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49397 (1998 XU40)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 XU40 = 2000 GS124 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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