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17609 (1995 UR)
Classification: Main-belt Asteroid          SPK-ID: 2017609
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .206344685797555 7.964e-08  
a 2.300520391158579 1.1935e-08 au
q 1.825820233874093 1.8792e-07 au
i 25.34668542347713 6.3738e-06 deg
node 297.7012622528252 1.1676e-05 deg
peri 155.8575076466333 1.9956e-05 deg
M 337.5897602724553 1.5195e-05 deg
tp 2459079.838056761817
(2020-Aug-18.33805676)
5.4004e-05 TDB
period 1274.49330223579
3.49
9.9177e-06
2.715e-08
d
yr
n .282465195673031 2.1981e-09 deg/d
Q 2.775220548443064 1.4397e-08 au
  Orbit Determination Parameters
   # obs. used (total)      930  
   data-arc span      24173 days (66.18 yr)  
   first obs. used      1953-10-31  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43423  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:31:24  

Additional Information
 Earth MOID = .857881 au 
 Jupiter MOID = 2.41169 au 
 T_jup = 3.438 
[ 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 14.1   n/a MPO502303  
diameter diameter 3.928 km 0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.545 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.243   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

17609 (1995 UR)          Discovered 1995-Oct-18 by Spahr, T. B. at Catalina Station
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 UR = 1998 QX26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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