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38540 Stevens (1999 VG2)
Classification: Main-belt Asteroid          SPK-ID: 2038540
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1017354344451931 7.7806e-08  
a 2.978018041911919 2.7333e-08 au
q 2.675048082632387 2.3915e-07 au
i 11.1791604807712 6.3382e-06 deg
node 74.18738045345425 4.0239e-05 deg
peri 300.9917669668748 5.1241e-05 deg
M 71.30810655614957 3.0733e-05 deg
tp 2457028.685932062312
(2015-Jan-06.18593206)
0.00015991 JED
period 1877.108661582102
5.14
2.5843e-05
7.075e-08
d
yr
n .1917843156168582 2.6404e-09 deg/d
Q 3.280988001191452 3.0114e-08 au
  Orbit Determination Parameters
   # obs. used (total)      892  
   data-arc span      6829 days (18.70 yr)  
   first obs. used      1997-04-07  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48833  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:35:53  

Additional Information
 Earth MOID = 1.69682 au 
 Jupiter MOID = 2.20183 au 
 T_jup = 3.224 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO319551  
rotation period rot_per 6.583 h n/a LCDB (Rev. 2015-December); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

38540 Stevens           Discovered 1999 Nov. 5 by D. S. Dixon at Jornada Observatory.
Berton L. Stevens (b. 1951) is an amateur astronomer at the Desert Moon Observatory. Las Cruces, New Mexico. His dedicated work in follow-up and confirmation astrometry of comets and NEAs has made Desert Moon an amateur observatory of significance; his efforts and contribution are commendable.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050125/MPCPages.arcLast Updated: 2005-06-01

Alternate Designations
 1999 VG2 = 1997 GX38 = 2000 WN72 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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