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17491 (1991 UM3)
Classification: Main-belt Asteroid          SPK-ID: 2017491
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2020583276404864 3.7481e-08  
a 2.778118048808184 1.4877e-08 au
q 2.216776161878152 1.0713e-07 au
i 9.432383333674673 4.4585e-06 deg
node 59.00978912792036 2.3792e-05 deg
peri 291.1511992654695 2.61e-05 deg
M 104.3966134400253 1.0936e-05 deg
tp 2458510.034593943875
(2019-Jan-26.53459394)
5.074e-05 TDB
period 1691.314884286367
4.63
1.3585e-05
3.719e-08
d
yr
n .2128521444141954 1.7097e-09 deg/d
Q 3.339459935738217 1.7883e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1469  
   data-arc span      10321 days (28.26 yr)  
   first obs. used      1991-10-31  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:05:34  

Additional Information
 Earth MOID = 1.23261 au 
 Jupiter MOID = 2.17473 au 
 T_jup = 3.285 
[ show covariance matrix ]

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 13.9   n/a MPO502302  
diameter diameter 10.230 km 2.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.056   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

17491 (1991 UM3)          Discovered 1991-Oct-31 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 UM3 = 1999 JG13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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