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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1409666985140416 4.0417e-08  
a 2.638869840278148 1.2387e-08 au
q 2.266877071085861 1.0733e-07 au
i .3991459972235896 4.7474e-06 deg
node 219.0498208075328 0.00057505 deg
peri .7119059936538257 0.00057525 deg
M 219.9664557771135 1.6663e-05 deg
tp 2460005.552824166632
(2023-Mar-02.05282417)
7.4685e-05 TDB
period 1565.760674820889
4.29
1.1025e-05
3.018e-08
d
yr
n .2299201952055548 1.6189e-09 deg/d
Q 3.010862609470435 1.4133e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1087  
   data-arc span      10636 days (29.12 yr)  
   first obs. used      1991-12-31  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57547  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:38:09  

Additional Information
 Earth MOID = 1.2595 au 
 Jupiter MOID = 1.96044 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 15.21   n/a E2021B10  
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. 2020-October); 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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