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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06387350855107618 4.1234e-08  
a 2.603915878450145 1.1136e-08 au
q 2.437594635321677 1.0975e-07 au
i 10.19864817479074 5.3846e-06 deg
node 63.73988993767158 2.1457e-05 deg
peri 222.2122024031077 4.5923e-05 deg
M 314.2547224020103 4.0461e-05 deg
tp 2458795.521556518990
(2019-Nov-08.02155652)
0.00017234 TDB
period 1534.754274830798
4.20
9.8453e-06
2.695e-08
d
yr
n .2345652368615745 1.5047e-09 deg/d
Q 2.770237121578614 1.1847e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1896  
   data-arc span      23562 days (64.51 yr)  
   first obs. used      1955-03-13  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45286  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:50:41  

Additional Information
 Earth MOID = 1.43068 au 
 Jupiter MOID = 2.31174 au 
 T_jup = 3.388 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456656.5 (2013-Dec-30.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06260267070904472 4.1051e-08  
q 2.440550223782329 1.0887e-07 au
tp 2457263.986490980649
(2015-Aug-29.48649098)
0.00017832 TDB
node 63.75951921044032 2.1457e-05 deg
peri 222.7340266243251 4.6863e-05 deg
i 10.19876545203114 5.3845e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1896  
   data-arc span      23562 days (64.51 yr)  
   first obs. used      1955-03-13  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45286  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:50:41  

Additional Information
 Jupiter MOID = 2.31174 au 
 T_jup = 3.388 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.68519547533994E-15 -4.448782618979222E-15 -2.553039479769451E-12 4.781768695058071E-15 -5.647758437254615E-13 3.983809725552906E-16
q -4.448782618979222E-15 1.185288403739331E-14 6.265218951205272E-12 -1.420140111323884E-14 1.371932483642913E-12 -9.065482511311457E-16
tp -2.553039479769451E-12 6.265218951205272E-12 3.179918048351367E-8 -2.847573758215878E-11 7.437905068207084E-9 4.652271122721904E-12
node 4.781768695058071E-15 -1.420140111323884E-14 -2.847573758215878E-11 4.604239319614044E-10 -4.59232560666132E-10 -1.836169376386932E-11
peri -5.647758437254615E-13 1.371932483642913E-12 7.437905068207084E-9 -4.59232560666132E-10 2.196125021929999E-9 1.9194331720449E-11
i 3.983809725552906E-16 -9.065482511311457E-16 4.652271122721904E-12 -1.836169376386932E-11 1.9194331720449E-11 2.899334485193484E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO279572  
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-January); 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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