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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2018073463481054 3.8606e-08  
a 2.777451351122997 1.5284e-08 au
q 2.216941264341905 1.1087e-07 au
i 9.433613546777305 4.4991e-06 deg
node 59.01267365151692 2.4295e-05 deg
peri 291.1130868582651 2.659e-05 deg
M 19.29946880154856 1.0838e-05 deg
tp 2458509.861862477557
(2019-Jan-26.36186248)
5.0802e-05 TDB
period 1690.706093706653
4.63
1.3956e-05
3.821e-08
d
yr
n .212928788356554 1.7576e-09 deg/d
Q 3.337961437904089 1.8369e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1402  
   data-arc span      10260 days (28.09 yr)  
   first obs. used      1991-10-31  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50278  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:20:20  

Additional Information
 Earth MOID = 1.23192 au 
 Jupiter MOID = 2.17258 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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