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5486 (1991 UT2)
Classification: Main-belt Asteroid          SPK-ID: 2005486
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0633517025570389 4.1348e-08  
a 2.602746831139757 1.1226e-08 au
q 2.437858388062116 1.0992e-07 au
i 10.19437621893137 5.3685e-06 deg
node 63.71918124385623 2.1381e-05 deg
peri 221.5564069171399 4.5847e-05 deg
M 48.70843194844612 4.0294e-05 deg
tp 2458792.985731197853
(2019-Nov-05.48573120)
0.00017181 TDB
period 1533.720831905285
4.20
9.9225e-06
2.717e-08
d
yr
n .2347232902566664 1.5186e-09 deg/d
Q 2.767635274217399 1.1937e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1918  
   data-arc span      23819 days (65.21 yr)  
   first obs. used      1955-03-13  
   last obs. used      2020-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45359  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:20:41  

Additional Information
 Earth MOID = 1.43116 au 
 Jupiter MOID = 2.31204 au 
 T_jup = 3.389 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7   n/a MPO492816  
diameter diameter 7.174 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 17.90 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Folberth, J.; Casimir, S.; Dou, Y.; Evans, D; et al. (2012) Minor Planet Bull. 39, 51-55.]
geometric albedo albedo 0.455   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5486 (1991 UT2)          Discovered 1991-Oct-31 by Ueda and Kaneda at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 UT2 = 1974 WP1 = 1977 KQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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