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26982 (1997 UY21)
Classification: Main-belt Asteroid          SPK-ID: 2026982
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2710246240307106 4.8903e-08  
a 2.938180714946161 1.5893e-08 au
q 2.141861391343594 1.4373e-07 au
i 11.61515462015274 4.7444e-06 deg
node 257.4471820700267 2.4023e-05 deg
peri 83.62384886073741 2.5537e-05 deg
M 132.8030975274964 9.088e-06 deg
tp 2457921.887450653643
(2017-Jun-17.38745065)
4.5383e-05 TDB
period 1839.569425058831
5.04
1.4926e-05
4.087e-08
d
yr
n .1956979688268558 1.5878e-09 deg/d
Q 3.734500038548729 2.02e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1487  
   data-arc span      8271 days (22.64 yr)  
   first obs. used      1996-07-14  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4445  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:01:00  

Additional Information
 Earth MOID = 1.17012 au 
 Jupiter MOID = 1.90443 au 
 T_jup = 3.188 
[ 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 13.3   n/a MPO459045  
diameter diameter 6.368 km 0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26982 (1997 UY21)          Discovered 1997-Oct-25 by Hirasawa, M., Suzuki, S. at Nyukasa
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 UY21 = 2001 HH37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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