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JPL Small-Body Database Browser
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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1112261646699443 3.6675e-08  
a 3.009222621360863 1.7625e-08 au
q 2.674518330548858 1.14e-07 au
i 7.920718967728618 3.6728e-06 deg
node 125.7948697323128 3.3564e-05 deg
peri 204.7528454879293 3.9446e-05 deg
M 68.8468692155438 1.9776e-05 deg
tp 2458635.862274687734
(2019-Jun-01.36227469)
0.00010541 TDB
period 1906.689187295368
5.22
1.6751e-05
4.586e-08
d
yr
n .1888089586906709 1.6588e-09 deg/d
Q 3.343926912172868 1.9585e-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 = 1.66559 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1943-Feb-19 22:49 00:02 Jupiter 1.97092031129382 1.97092000403791 1.97092061854973 3.19126552098204 3.05362994246035 2430775.450462074 1.87446803533629 88.8098509947488 12.0592360559522 -88.1824827686361 4243222.72164485 T 23 CATAB v2.0f-lin.ifort 2019-Dec-13 22:31:16 2019-Dec-13 22:31
2073-Aug-03 06:15 00:02 Jupiter 1.97909878091581 1.97909843946014 1.9790991223716 3.24423806108689 3.10951968877348 2478422.760577505 1.64172178371178 77.603506349251 12.2035611200164 86.0866158986364 4283640.57905766 T 23 CATAB v2.0f-lin.ifort 2019-Dec-13 22:31:16 2019-Dec-13 22:31
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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