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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1905177259175617 2.6606e-08  
a 2.257344215299798 7.4963e-09 au
q 1.827280128787718 6.0562e-08 au
i 7.325140814712401 3.2263e-06 deg
node 76.44546762479006 2.5839e-05 deg
peri 209.1018016439399 2.7715e-05 deg
M 244.6826278783201 1.1596e-05 deg
tp 2459397.314328487206
(2021-Jul-01.81432849)
4.0804e-05 TDB
period 1238.782636363402
3.39
6.1707e-06
1.689e-08
d
yr
n .2906078834433973 1.4476e-09 deg/d
Q 2.687408301811879 8.9244e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2373  
   data-arc span      16607 days (45.47 yr)  
   first obs. used      1974-11-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43919  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:12:44  

Additional Information
 Earth MOID = .814815 au 
 Jupiter MOID = 2.4684 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-August); 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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