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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2714991422455684 4.8713e-08  
a 2.937083525255116 1.5369e-08 au
q 2.139667867444762 1.4333e-07 au
i 11.6150236736983 4.1941e-06 deg
node 257.442326658442 2.3812e-05 deg
peri 83.62294248386574 2.4987e-05 deg
M 211.1068330373583 9.0577e-06 deg
tp 2459760.905307364598
(2022-Jun-30.40530736)
4.8871e-05 TDB
period 1838.539109856801
5.03
1.4431e-05
3.951e-08
d
yr
n .195807637743447 1.5369e-09 deg/d
Q 3.73449918306547 1.9542e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1622  
   data-arc span      8689 days (23.79 yr)  
   first obs. used      1996-07-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44225  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:07:11  

Additional Information
 Earth MOID = 1.16883 au 
 Jupiter MOID = 1.90762 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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