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129973 Michaeldaly (1999 UW25)
Classification: Main-belt Asteroid          SPK-ID: 2129973
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1819388472724771 4.9865e-08  
a 2.674660149984227 1.8227e-08 au
q 2.188035565450466 1.3365e-07 au
i 12.58960283376391 6.0287e-06 deg
node 214.3884680887707 2.6441e-05 deg
peri 202.5010625360554 3.3806e-05 deg
M 236.0589418746268 2.5594e-05 deg
tp 2459550.565030660251
(2021-Dec-02.06503066)
0.00011744 TDB
period 1597.722449951806
4.37
1.6332e-05
4.471e-08
d
yr
n .2253207370346827 2.3033e-09 deg/d
Q 3.161284734517988 2.1544e-08 au
  Orbit Determination Parameters
   # obs. used (total)      372  
   data-arc span      7182 days (19.66 yr)  
   first obs. used      1999-10-01  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:44:54  

Additional Information
 Earth MOID = 1.20417 au 
 Jupiter MOID = 2.23745 au 
 T_jup = 3.322 
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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 15.5   n/a MPO338153  

129973 Michaeldaly           Discovered 1999 Oct. 30 by the Catalina Sky Survey.
Michael Daly (b. 1965) is a professor of planetary science at York University and is the lead scientist for the OSIRIS-REx Laser Altimeter. Prior to this, he was the lead engineer for the development of Phoenix MET, Canada's first instruments to operate on the surface of Mars.
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 2016-08-18Last Updated: 2016-08-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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