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173002 Dorfi (2006 OS)
Classification: Main-belt Asteroid          SPK-ID: 2173002
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1360794246336749 4.669e-08  
a 2.554224620612909 1.682e-08 au
q 2.206647203854738 1.1484e-07 au
i 2.76128456545155 5.2071e-06 deg
node 35.75459551697631 9.4714e-05 deg
peri 281.7865974216757 9.7388e-05 deg
M 174.9393295222452 2.6491e-05 deg
tp 2458475.943905120210
(2018-Dec-23.44390512)
0.00010649 TDB
period 1491.032318856327
4.08
1.4728e-05
4.032e-08
d
yr
n .2414434586341712 2.3849e-09 deg/d
Q 2.90180203737108 1.9109e-08 au
  Orbit Determination Parameters
   # obs. used (total)      411  
   data-arc span      8246 days (22.58 yr)  
   first obs. used      1998-08-17  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51902  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:55:14  

Additional Information
 Earth MOID = 1.19341 au 
 Jupiter MOID = 2.37415 au 
 T_jup = 3.424 
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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 16.1   n/a MPO454187  
diameter diameter 2.877 km 0.453 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173002 Dorfi           Discovered 2006 July 17 by W. Ries at Altschwendt.
Ernst Dorfi (b. 1956) is a professor of theoretical astrophysics at the University of Vienna and one of the most respected astronomical specialists in Austria. In addition to his research, he promotes astronomy at conventions and on television shows.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080520/MPCPages.arcLast Updated: 2008-05-22

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Alternate Designations
 2006 OS = 2006 ND1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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