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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 133 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .809546436491817 3.89e-08  
a 1.247992274878316 4.2064e-09 AU
q .2376845759812592 4.8942e-08 AU
i 14.91719344129989 7.9835e-06 deg
node 64.32806747990396 1.1444e-05 deg
peri 209.8724486772249 1.2966e-05 deg
M 228.1511944372513 1.5711e-05 deg
tp 2457187.004781938745
(2015-Jun-13.50478194)
2.2991e-05 JED
period 509.2326867230841
1.39
2.5746e-06
7.049e-09
d
yr
n .7069459785007174 3.5742e-09 deg/d
Q 2.258299973775373 7.6117e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      720  
   data-arc span      5197 days (14.23 yr)  
   first obs. used      1998-11-15  
   last obs. used      2013-02-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59357  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 05:41:18  

Additional Information
 Earth MOID = .0687113 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 16.9 mag n/a MPO254091  
rotation period rot_per 9.02 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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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