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137052 Tjelvar (1998 VO33)
Classification: Apollo [NEO]          SPK-ID: 2137052
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 158 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8094661925628647 3.8087e-08  
a 1.248018636147281 4.0326e-09 au
q .2377897424976423 4.7947e-08 au
i 14.91337851635677 7.1413e-06 deg
node 64.30996810063385 1.0947e-05 deg
peri 209.8818204756178 1.2154e-05 deg
M 292.3303450618133 1.7168e-05 deg
tp 2457696.224144532746
(2016-Nov-03.72414453)
2.4681e-05 JED
period 509.2488215473683
1.39
2.4682e-06
6.758e-09
d
yr
n .7069235799233248 3.4263e-09 deg/d
Q 2.25824752979692 7.2969e-09 au
  Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      6271 days (17.17 yr)  
   first obs. used      1998-11-15  
   last obs. used      2016-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57497  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 07:15:01  

Additional Information
 Earth MOID = .0685462 au 
 Jupiter MOID = 2.91036 au 
 T_jup = 4.725 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.0 mag n/a MPO359698  
rotation period rot_per 9.02 h n/a LCDB (Rev. 2016-February); 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:
[Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]
SMASSII spectral type spec_B V   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

137052 Tjelvar           Discovered 1998 Nov. 15 by C.-I. Lagerkvist at the European Southern Observatory.
According to the 13th-century Gutnic saga, Tjelvar was the first inhabitant of Gotland. By making a fire, he prevented the island from disappearing into the sea during the night.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110218/MPCPages.arcLast Updated: 2011-02-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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