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6421 (1993 XS1)
Classification: Main-belt Asteroid          SPK-ID: 2006421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1331510198154458 4.3201e-08  
a 2.45897730870377 9.5336e-09 au
q 2.131561972346823 1.0645e-07 au
i 6.537062176411371 4.3392e-06 deg
node 140.3939024622573 3.9807e-05 deg
peri 268.4978562326142 4.3177e-05 deg
M 335.3373229357744 1.6358e-05 deg
tp 2459096.986804630010
(2020-Sep-04.48680463)
6.4096e-05 TDB
period 1408.413595018388
3.86
8.1907e-06
2.242e-08
d
yr
n .2556067346078834 1.4865e-09 deg/d
Q 2.786392645060717 1.0803e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1987  
   data-arc span      32190 days (88.13 yr)  
   first obs. used      1931-10-17  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51644  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:02:38  

Additional Information
 Earth MOID = 1.15355 au 
 Jupiter MOID = 2.58055 au 
 T_jup = 3.470 
[ 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 13.3   n/a MPO448978  
diameter diameter 4.518 km 0.355 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.498   0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6421 (1993 XS1)          Discovered 1993-Dec-06 by Ueda, S., Kaneda, H. at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1993 XS1 = 1931 UO = 1977 RG8 = 1989 VZ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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