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6873 Tasaka (1993 HT1)
Classification: Main-belt Asteroid          SPK-ID: 2006873
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1355140627567664 1.4627e-08  
a 2.172114373060102 5.9717e-09 au
q 1.877762329594361 3.0928e-08 au
i 4.788757909173786 5.3809e-07 deg
node 199.5545600525253 1.9016e-05 deg
peri 53.05205099403638 2.1318e-05 deg
M 200.413754761185 9.465e-06 deg
tp 2459718.840826507845
(2022-May-19.34082651)
3.1384e-05 TDB
period 1169.290606866402
3.20
4.822e-06
1.32e-08
d
yr
n .3078789805425438 1.2697e-09 deg/d
Q 2.466466416525843 6.781e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2341  
   data-arc span      16040 days (43.92 yr)  
   first obs. used      1977-04-24  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48515  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 23:06:33  

Additional Information
 Earth MOID = .866751 au 
 Jupiter MOID = 2.56299 au 
 T_jup = 3.671 
[ 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 14.03   n/a E2021B10  
diameter diameter 3.885 km 0.293 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.322   0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

6873 Tasaka           Discovered 1993 Apr. 21 by K. Endate and K. Watanabe at Kitami.
Named in honor of Ichiro Tasaka (b. 1929), Japanese farmer, Mars observer and astronomical optician. He has made hundreds of precision telescope mirrors currently being used both by observatories and amateur astronomers. He operates a tourist house that has an observatory. Its main telescope is a 0.73-m equatorial reflector, both the optical and mechanical parts of which were made by Tasaka himself. Name proposed by the discoverers following a suggestion by T. Sato and A. Fujii.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980808/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1993 HT1 = 1977 HG1 = 1980 FK6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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