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97221 (1999 XH50)
Classification: Main-belt Asteroid          SPK-ID: 2097221
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .171863867335994 3.4234e-08  
a 2.550174103185086 1.2026e-08 au
q 2.111891319431597 8.8024e-08 au
i 4.22941201955166 4.818e-06 deg
node 72.21530781294932 6.6454e-05 deg
peri 249.7929882759061 6.8961e-05 deg
M 356.4883143023216 1.7913e-05 deg
tp 2458615.009963224928
(2019-May-11.50996323)
7.4008e-05 TDB
period 1487.486982228387
4.07
1.0522e-05
2.881e-08
d
yr
n .2420189247375383 1.7119e-09 deg/d
Q 2.988456886938575 1.4092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      847  
   data-arc span      8731 days (23.90 yr)  
   first obs. used      1995-12-03  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55171  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 11:28:02  

Additional Information
 Earth MOID = 1.10297 au 
 Jupiter MOID = 2.32733 au 
 T_jup = 3.416 
[ 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 15.8   n/a MPO439675  
diameter diameter 3.843 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

97221 (1999 XH50)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20050224/Numbers.arcLast Updated: 2005-02-28

Alternate Designations
 1999 XH50 = 2002 LJ17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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