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49407 (1998 XC50)
Classification: Main-belt Asteroid          SPK-ID: 2049407
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07062515183528795 4.9742e-08  
a 2.746952766897666 1.3073e-08 au
q 2.552948810651154 1.3568e-07 au
i 9.351518162845078 4.7715e-06 deg
node 61.98729113194818 2.8676e-05 deg
peri 138.998810015067 4.057e-05 deg
M 161.0077392268037 3.0777e-05 deg
tp 2458256.762865950989
(2018-May-18.26286595)
0.00014021 TDB
period 1662.934772846442
4.55
1.1872e-05
3.25e-08
d
yr
n .2164847388354197 1.5455e-09 deg/d
Q 2.940956723144178 1.3997e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1302  
   data-arc span      10765 days (29.47 yr)  
   first obs. used      1991-05-08  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54364  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:32:48  

Additional Information
 Earth MOID = 1.55594 au 
 Jupiter MOID = 2.04032 au 
 T_jup = 3.324 
[ 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 14.1   n/a MPO359072  
diameter diameter 4.122 km 0.805 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.286   0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49407 (1998 XC50)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XC50 = 1991 JJ7 = 1999 BH21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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