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60148 Seanurban (1999 US1)
Classification: Main-belt Asteroid          SPK-ID: 2060148
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05270192653342953 7.2796e-08  
a 2.941883405261045 2.187e-08 au
q 2.786840482167062 2.1474e-07 au
i .9596530012299184 7.4842e-06 deg
node 337.2292339026467 0.00030009 deg
peri 225.7499897017355 0.0003033 deg
M 206.4653959602018 4.6069e-05 deg
tp 2459786.532284579667
(2022-Jul-26.03228458)
0.00023858 TDB
period 1843.047853728989
5.05
2.0552e-05
5.627e-08
d
yr
n .1953286233298944 2.1781e-09 deg/d
Q 3.096926328355028 2.3022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      520  
   data-arc span      9127 days (24.99 yr)  
   first obs. used      1994-10-31  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58457  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 13:01:50  

Additional Information
 Earth MOID = 1.78309 au 
 Jupiter MOID = 1.8639 au 
 T_jup = 3.270 
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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 15.3   n/a MPO266219  

60148 Seanurban           Discovered 1999 Oct. 16 by P. Kusnirak and P. Pravec at Ondrejov.
Sean E. Urban (b. 1962) has made significant advances to astrometry, including completion of the reductions of the {22 \, 000} Astrographic Catalogue plates. These data formed the basis of proper motions for the most important reference star catalogs of the late 20th and early 21st centuries, including Tycho-2 and the UCAC.
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 2018-05-29Last Updated: 2018-05-31

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