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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1111322852325212 3.6648e-08  
a 3.008539606486594 1.77e-08 au
q 2.674193724805189 1.1388e-07 au
i 7.920747656305389 3.6729e-06 deg
node 125.798144214131 3.3567e-05 deg
peri 204.5997695857386 3.9468e-05 deg
M 353.4412542476367 1.9954e-05 deg
tp 2458635.225645058275
(2019-May-31.72564506)		 0.00010558 TDB
period 1906.040071224671
5.22		 1.6821e-05
4.605e-08		 d
yr
n .1888732589806952 1.6668e-09 deg/d
Q 3.342885488167999 1.9667e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1364  
   data-arc span      9569 days (26.20 yr)  
   first obs. used      1993-09-18  
   last obs. used      2019-11-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5397  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:31:11  

Additional Information
 Earth MOID = 1.66431 au 
 Jupiter MOID = 1.98145 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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