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7788 Tsukuba (1994 XS)
Classification: Main-belt Asteroid          SPK-ID: 2007788
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1112261787322735 3.6536e-08  
a 3.009222618008507 1.7462e-08 au
q 2.674518285252693 1.134e-07 au
i 7.92072029094693 3.6116e-06 deg
node 125.7948469453661 3.3509e-05 deg
peri 204.75290486964 3.9371e-05 deg
M 68.84683730706317 1.9645e-05 deg
tp 2458635.862444295822
(2019-Jun-01.36244430)		 0.00010477 TDB
period 1906.689184109212
5.22		 1.6596e-05
4.544e-08		 d
yr
n .1888089590061784 1.6434e-09 deg/d
Q 3.343926950764321 1.9404e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1383  
   data-arc span      9619 days (26.34 yr)  
   first obs. used      1993-09-18  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53843  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:38:17  

Additional Information
 Earth MOID = 1.66559 au 
 Jupiter MOID = 1.98364 au 
 T_jup = 3.226 
[ 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 13.8   n/a MPO439137  
diameter diameter 9.686 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7788 Tsukuba (1994 XS)          Discovered 1994-Dec-05 by Nakamura, A. at Kuma Kogen
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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