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16558 (1991 VQ2)
Classification: Main-belt Asteroid          SPK-ID: 2016558
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2420386073052863 4.481e-08  
a 2.34272882775632 7.6838e-09 au
q 1.775698004992234 1.0469e-07 au
i 23.89760277204505 5.6723e-06 deg
node 33.20593869270913 9.479e-06 deg
peri 32.06258999323376 1.3043e-05 deg
M 319.2127798659166 8.2139e-06 deg
tp 2459148.889463772778
(2020-Oct-26.38946377)
2.9981e-05 TDB
period 1309.729047054132
3.59
6.4436e-06
1.764e-08
d
yr
n .274866012027235 1.3523e-09 deg/d
Q 2.909759650520406 9.5436e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1672  
   data-arc span      24687 days (67.59 yr)  
   first obs. used      1953-04-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:03:03  

Additional Information
 Earth MOID = .813218 au 
 Jupiter MOID = 2.58406 au 
 T_jup = 3.412 
[ 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 13.5   n/a MPO435853  
diameter diameter 5.677 km 1.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 170. h n/a LCDB (Rev. 2020-October); 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:
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
geometric albedo albedo 0.231   0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

16558 (1991 VQ2)          Discovered 1991-Nov-01 by Helin, E. F. at Palomar
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 VQ2 = 2000 FR14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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