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52312 (1991 VG9)
Classification: Main-belt Asteroid          SPK-ID: 2052312
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09442980722819698 3.1404e-08  
a 2.906670063569456 1.4212e-08 au
q 2.632193769790622 9.4372e-08 au
i 3.356221900027426 3.4484e-06 deg
node 91.26398456413462 6.5331e-05 deg
peri 212.9688164508845 6.9226e-05 deg
M 41.87846915637781 2.1353e-05 deg
tp 2458989.937838262102
(2020-May-20.43783826)
0.00010774 TDB
period 1810.056092131514
4.96
1.3276e-05
3.635e-08
d
yr
n .1988888640329735 1.4587e-09 deg/d
Q 3.181146357348291 1.5554e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1193  
   data-arc span      10644 days (29.14 yr)  
   first obs. used      1991-10-06  
   last obs. used      2020-11-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51413  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:44:26  

Additional Information
 Earth MOID = 1.61573 au 
 Jupiter MOID = 2.00628 au 
 T_jup = 3.276 
[ 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 14.86   n/a E2021B10  
diameter diameter 2.956 km 0.370 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 1.15 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 0.266   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52312 (1991 VG9)          Discovered 1991-Nov-04 by Spacewatch at Kitt Peak
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 VG9 = 2000 PG15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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