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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1905500618862316 1.6128e-08  
a 2.256989130978527 7.2527e-09 au
q 1.826919712394016 3.6649e-08 au
i 7.325218938613827 2.8237e-07 deg
node 76.44154719217836 2.6339e-06 deg
peri 209.1544114531957 4.1432e-06 deg
M 302.7623876012946 4.9941e-06 deg
tp 2459397.411752296936
(2021-Jul-01.91175230)
1.7938e-05 TDB
period 1238.49035373985
3.39
5.9697e-06
1.634e-08
d
yr
n .2906764666457947 1.4011e-09 deg/d
Q 2.687058549563038 8.6347e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2537  
   data-arc span      16897 days (46.26 yr)  
   first obs. used      1974-11-09  
   last obs. used      2021-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44289  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 21:31:17  

Additional Information
 Earth MOID = .812578 au 
 Jupiter MOID = 2.46814 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 13.57   n/a E2021B10  
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 3.73297 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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

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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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