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JPL Small-Body Database Browser
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250374 Jirovec (2003 UL4)
Classification: Main-belt Asteroid          SPK-ID: 2250374
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1637669460111632 5.4259e-08  
a 2.318928382656071 1.2849e-08 au
q 1.939164563409881 1.2634e-07 au
i 3.639933076549434 5.9796e-06 deg
node 125.9786479493509 0.00011286 deg
peri 170.9478332474725 0.00011675 deg
M 325.0992895814309 3.0899e-05 deg
tp 2459125.543522016468
0.0001108 TDB
period 1289.820963127956
n .2791085044291426 2.3198e-09 deg/d
Q 2.698692201902262 1.4954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      327  
   data-arc span      9040 days (24.75 yr)  
   first obs. used      1995-04-27  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59389  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:32:01  

Additional Information
 Earth MOID = .923403 au 
 Jupiter MOID = 2.49602 au 
 T_jup = 3.558 
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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 16.9   n/a MPO437162  
diameter diameter 1.941 km 0.357 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.42 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.098   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

250374 Jírovec           Discovered 2003 Oct. 17 by KLENOT at Klet.
Vojtěch Matyáš Jírovec (1763-1850), also known as Adalbert Gyrowetz, was a Bohemian composer born in Ceske Budejovice. From 1786 to 1793 he traveled throughout Europe, and met Mozart, Haydn and Goethe. He was a prolific composer, writing 60 symphonies, 30 operas and 60 quartets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-02-14Last Updated: 2014-04-17

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Alternate Designations
 2003 UL4 = 1999 NR16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Apr-02 01:26 UT
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