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21500 Vazquez (1998 KS6)
Classification: Main-belt Asteroid          SPK-ID: 2021500
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1190657890954852 4.6956e-08  
a 2.32652630146514 7.5515e-09 au
q 2.049516611529792 1.0809e-07 au
i 4.289405029468162 3.5854e-06 deg
node 101.1312579359456 6.6071e-05 deg
peri 50.94714136078381 6.7816e-05 deg
M 254.9778940758686 1.6765e-05 deg
tp 2459774.627791903612
(2022-Jul-14.12779190)
6.1122e-05 TDB
period 1296.165258613634
3.55
6.3107e-06
1.728e-08
d
yr
n .2777423616376298 1.3523e-09 deg/d
Q 2.603535991400487 8.4506e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1187  
   data-arc span      21918 days (60.01 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-10-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52271  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:46:28  

Additional Information
 Earth MOID = 1.06428 au 
 Jupiter MOID = 2.38981 au 
 T_jup = 3.561 
[ 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 15.57   n/a MPCxxxxx  
diameter diameter 4.847 km 0.208 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21500 Vasquez           Discovered 1998 May 22 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Angel Vasquez (b. 1955), PC network specialist and telescope operator at the Arecibo Observatory, has played a key role in numerous radar experiments on minor planets since the 1970s.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18

Alternate Designations
 1998 KS6 = 1995 MK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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