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44613 Rudolf (1999 RU31)
Classification: Main-belt Asteroid          SPK-ID: 2044613
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02417489216150098 3.8495e-08  
a 2.42057540824726 1.1362e-08 au
q 2.362058258784101 9.4516e-08 au
i 7.813846479704432 4.2171e-06 deg
node 220.5463235299121 3.1604e-05 deg
peri 80.46061291456135 0.00011197 deg
M 239.8439735877707 0.00010965 deg
tp 2459459.612808392667
(2021-Sep-02.11280839)
0.00042004 TDB
period 1375.549907537041
3.77
9.6848e-06
2.652e-08
d
yr
n .2617135140117088 1.8426e-09 deg/d
Q 2.479092557710419 1.1636e-08 au
  Orbit Determination Parameters
   # obs. used (total)      910  
   data-arc span      8034 days (22.00 yr)  
   first obs. used      1998-05-24  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51862  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:56:18  

Additional Information
 Earth MOID = 1.36114 au 
 Jupiter MOID = 2.55064 au 
 T_jup = 3.501 
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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 15.5   n/a MPO452782  
diameter diameter 3.775 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.094   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

44613 Rudolf           Discovered 1999 Sept. 8 by P. Pravec and P. Kušnirák at Ondřejov.
Rudolf II (1552-1612), of the Habsburg dynasty, was a Czech and Hungarian king and Roman emperor. He created an important center for arts and sciences in Prague, assembled a great artistic collection and employed Tycho Brahe and Johannes Kepler as his court astronomers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031110/MPCPages.arcLast Updated: 2003-11-12

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Alternate Designations
 1999 RU31 = 2001 BS48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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