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5250 Jas (1984 QF)
Classification: Main-belt Asteroid          SPK-ID: 2005250
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .188830257249698 3.6224e-08  
a 2.679556672085826 1.0264e-08 au
q 2.173575296380715 9.9604e-08 au
i 13.48588278295136 3.8819e-06 deg
node 134.1693527841704 1.4757e-05 deg
peri 208.6507185098262 1.7438e-05 deg
M 44.46087996508492 8.6556e-06 deg
tp 2458802.635263909714
3.8434e-05 TDB
period 1602.111902608331
n .2247034051828084 1.291e-09 deg/d
Q 3.185538047790937 1.2202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2306  
   data-arc span      13875 days (37.99 yr)  
   first obs. used      1982-01-30  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4622  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:33:32  

Additional Information
 Earth MOID = 1.17357 au 
 Jupiter MOID = 2.22119 au 
 T_jup = 3.312 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO309190  
diameter diameter 7.104 km 0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.291   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

5250 Jas           Discovered 1984 Aug. 21 by A. Mrkos at Klet.
The Czech word for brightness, Jas symbolizes the South Bohemian Astronomical Society, known in Czech as Jihočeská Astronomická Společnost. Inaugurated in 1928, the society has been concerned mainly with the education and popularization of astronomy, and for this purpose it founded the České Budějovice Observatory in 1937. The establishment of an observatory on the top of Klet mountain was inspired by JAS members. State-aided since the 1950s, the České Budějovice Observatory oversees the directorship of the Klet Observatory and is the home of the Klet archives. Name suggested by M. Tichy
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19960828/MPCPages.arcLast Updated: 2003-09-26

Alternate Designations
 1984 QF = 1988 OE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-May-28 19:35 UT
(server date/time)  
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