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4282 Endate (1987 UQ1)
Classification: Main-belt Asteroid          SPK-ID: 2004282
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1441199384180175 1.2414e-08  
a 2.391540375306218 6.1918e-09 au
q 2.046871723692883 3.1816e-08 au
i 2.722945289832593 9.0371e-07 deg
node 325.6658345706745 2.3403e-05 deg
peri 102.1911670086884 2.4082e-05 deg
M 325.2990111374293 8.4259e-06 deg
tp 2459330.713002433337
(2021-Apr-26.21300243)
3.1722e-05 TDB
period 1350.874497025171
3.70
5.2462e-06
1.436e-08
d
yr
n .2664940383379613 1.0349e-09 deg/d
Q 2.736209026919552 7.0841e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2612  
   data-arc span      24194 days (66.24 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45396  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:31:34  

Additional Information
 Earth MOID = 1.06239 au 
 Jupiter MOID = 2.53723 au 
 T_jup = 3.516 
[ 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 13.65   n/a MPCxxxxx  
diameter diameter 7.386 km 1.581 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 34. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Szabo, R.; Pal, A.; Sarneczky, K.; Szabo, Gy.M.; et al. (2016) Astron. Astrophys. 596, A40.]
geometric albedo albedo 0.060   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

4282 Endate (1987 UQ1)          Discovered 1987-Oct-28 by Ueda and Kaneda at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1987 UQ1 = 1959 EJ = 1983 RT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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