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JPL Small-Body Database Browser
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21942 Subramanian (1999 VN106)
Classification: Main-belt Asteroid          SPK-ID: 2021942
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412538475806101 4.4567e-08  
a 2.638277868386527 1.5425e-08 au
q 2.265610968490159 1.2082e-07 au
i .3993190859931037 5.0883e-06 deg
node 219.0508564036651 0.00067768 deg
peri .7822740256861149 0.00067791 deg
M 128.8054251387184 1.8168e-05 deg
tp 2458440.470527617088
(2018-Nov-17.97052762)
7.7353e-05 TDB
period 1565.233838875355
4.29
1.3727e-05
3.758e-08
d
yr
n .2299975831462126 2.017e-09 deg/d
Q 3.010944768282894 1.7603e-08 au
  Orbit Determination Parameters
   # obs. used (total)      902  
   data-arc span      9627 days (26.36 yr)  
   first obs. used      1991-12-31  
   last obs. used      2018-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59158  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 18:07:49  

Additional Information
 Earth MOID = 1.25766 au 
 Jupiter MOID = 1.96271 au 
 T_jup = 3.382 
[ 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 15.3   n/a MPO302199  
diameter diameter 5.293 km 0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 0.97 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.036   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21942 Subramanian           Discovered 1999 Nov. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Narayan Swamy Subramanian (b. 1991) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his environmental sciences project. He attends the Miller Junior High School, San Jose, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051019/MPCPages.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 VN106 = 1999 WQ19 = 1999 XK147 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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