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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457010.5 (2014-Dec-19.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1149721185889478 3.6844e-08  
q 2.661399536791755 1.1489e-07 au
tp 2456725.671473910944
(2014-Mar-09.17147391)
0.00010528 TDB
node 126.0272707061296 3.3481e-05 deg
peri 203.9017813787986 3.8904e-05 deg
i 7.926674089546069 3.6171e-06 deg
  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
 Jupiter MOID = 1.98364 au 
 T_jup = 3.226 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.357483799117709E-15 -4.195611577663998E-15 1.409321506110892E-12 8.645872411822024E-15 2.525421187037658E-13 -1.674468621623189E-15
q -4.195611577663998E-15 1.320039658145075E-14 -4.882343610746366E-12 -2.824253895056422E-14 -8.744940562959985E-13 5.682093525843284E-15
tp 1.409321506110892E-12 -4.882343610746366E-12 1.10846373813755E-8 3.249554181279172E-11 2.120364291280736E-9 -2.069369147300912E-12
node 8.645872411822024E-15 -2.824253895056422E-14 3.249554181279172E-11 1.120983108061305E-9 -1.103769526994091E-9 1.988117729732454E-11
peri 2.525421187037658E-13 -8.744940562959985E-13 2.120364291280736E-9 -1.103769526994091E-9 1.513518209343352E-9 -2.011409508932214E-11
i -1.674468621623189E-15 5.682093525843284E-15 -2.069369147300912E-12 1.988117729732454E-11 -2.011409508932214E-11 1.308311631839066E-11

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 1.97092040928206 1.9709201040685 1.97092071449561 3.19126622723023 3.05363068753815 2430775.450498223 1.8582606354134 88.3439093480894 11.9492478278253 -88.1045319973872 4299257.81903154 T 24 CATAB v2.0f-lin.ifort 2020-Feb-22 18:38:35 2020-Feb-22 18:38
2073-Aug-03 06:15 00:02 Jupiter 1.97909890314496 1.97909856258104 1.9790992437091 3.24423891594936 3.10952058917286 2478422.760390101 1.62635923034896 76.9850403527703 12.0550783334961 85.9134717443329 4335880.36460602 T 24 CATAB v2.0f-lin.ifort 2020-Feb-22 18:38:35 2020-Feb-22 18:38
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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