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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 ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1111322847439298 3.6782e-08  
a 3.008539606894598 1.7941e-08 au
q 2.674193726637797 1.1452e-07 au
i 7.920747646658542 3.7492e-06 deg
node 125.7981444615503 3.3724e-05 deg
peri 204.5997696246395 3.9672e-05 deg
M 353.4412538463396 2.0204e-05 deg
tp 2458635.225647190029
(2019-May-31.72564719)		 0.00010692 TDB
period 1906.040071612404
5.22		 1.7049e-05
4.668e-08		 d
yr
n .188873258942274 1.6895e-09 deg/d
Q 3.3428854871514 1.9935e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1313  
   data-arc span      9536 days (26.11 yr)  
   first obs. used      1993-09-18  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54611  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:05:09  

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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