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249660 (1999 VK16)
Classification: Main-belt Asteroid          SPK-ID: 2249660
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0760607138759094 4.1179e-08  
a 3.163092318022009 3.8832e-08 au
q 2.922505258257849 1.3736e-07 au
i 8.492650181740498 7.3881e-06 deg
node 227.1968281323919 3.2799e-05 deg
peri 77.72202279391003 6.3518e-05 deg
M 314.388696547482 5.333e-05 deg
tp 2459260.837188659236
(2021-Feb-15.33718866)
0.00030552 TDB
period 2054.784249147587
5.63
3.7838e-05
1.036e-07
d
yr
n .175200875785058 3.2263e-09 deg/d
Q 3.403679377786168 4.1785e-08 au
  Orbit Determination Parameters
   # obs. used (total)      261  
   data-arc span      7093 days (19.42 yr)  
   first obs. used      1999-11-02  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51237  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:25:56  

Additional Information
 Earth MOID = 1.92314 au 
 Jupiter MOID = 1.77821 au 
 T_jup = 3.183 
[ 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 16.3   n/a MPO454851  
diameter diameter 3.506 km 0.664 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 32.43 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]
geometric albedo albedo 0.033   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249660 (1999 VK16)          Discovered 1999-Nov-02 by Spacewatch at Kitt Peak
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 1999 VK16 = 2005 UW63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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