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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2021837724580262 3.6938e-08  
a 2.778072315275706 1.4044e-08 au
q 2.216391174412061 1.0498e-07 au
i 9.431917751193053 4.0106e-06 deg
node 59.0007908525185 2.3692e-05 deg
peri 291.1768153442297 2.5549e-05 deg
M 146.9337896821247 1.0657e-05 deg
tp 2458510.207863863839
(2019-Jan-26.70786386)
4.8552e-05 TDB
period 1691.273120679945
4.63
1.2825e-05
3.511e-08
d
yr
n .2128574004979566 1.6141e-09 deg/d
Q 3.339753456139352 1.6884e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1634  
   data-arc span      10723 days (29.36 yr)  
   first obs. used      1991-10-31  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48255  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:04:29  

Additional Information
 Earth MOID = 1.23056 au 
 Jupiter MOID = 2.17521 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 13.85   n/a E2021B10  
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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