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21317 (1996 XV18)
Classification: Main-belt Asteroid          SPK-ID: 2021317
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03828091920137617 3.945e-08  
a 2.541238159560015 1.21e-08 au
q 2.443957226902444 1.0312e-07 au
i 3.621009672516438 4.5815e-06 deg
node 216.4879907329324 6.3795e-05 deg
peri 222.4672276664335 8.934e-05 deg
M 1.069927203583156 6.3007e-05 deg
tp 2459196.102374845088
(2020-Dec-12.60237485)
0.00025898 TDB
period 1479.675486767959
4.05
1.0568e-05
2.893e-08
d
yr
n .2432965898396713 1.7376e-09 deg/d
Q 2.638519092217586 1.2563e-08 au
  Orbit Determination Parameters
   # obs. used (total)      689  
   data-arc span      8826 days (24.16 yr)  
   first obs. used      1996-12-12  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50096  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:43:17  

Additional Information
 Earth MOID = 1.46001 au 
 Jupiter MOID = 2.44696 au 
 T_jup = 3.441 
[ 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 15.6   n/a MPO439243  
diameter diameter 2.698 km 0.838 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.202   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21317 (1996 XV18)          Discovered 1996-Dec-12 by Klet at Klet
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 XV18 = 1998 KL3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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