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JPL Small-Body Database Browser
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9601 (1991 UE3)
Classification: Main-belt Asteroid          SPK-ID: 2009601
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1903949871589368 2.7083e-08  
a 2.257611934415224 7.7088e-09 au
q 1.827773939152375 6.1373e-08 au
i 7.325628437949255 3.5535e-06 deg
node 76.44852809349452 2.7929e-05 deg
peri 209.0329408712295 3.0028e-05 deg
M 128.543095107821 1.1864e-05 deg
tp 2458158.096435733061
(2018-Feb-08.59643573)
4.0223e-05 TDB
period 1239.003020757415
3.39
6.346e-06
1.737e-08
d
yr
n .2905561923327099 1.4882e-09 deg/d
Q 2.687449929678073 9.1765e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2072  
   data-arc span      16464 days (45.08 yr)  
   first obs. used      1974-11-09  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4671  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:53:54  

Additional Information
 Earth MOID = .814711 au 
 Jupiter MOID = 2.46693 au 
 T_jup = 3.588 
[ 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 13.5   n/a MPO347602  
diameter diameter 4.747 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 24. h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.652   0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9601 (1991 UE3)          Discovered 1991-Oct-18 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 UE3 = 1974 VZ2 = 1980 JL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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