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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1112557165344274 3.4874e-08  
a 3.010011084327859 1.6703e-08 au
q 2.675130144364394 1.071e-07 au
i 7.920788051444525 3.5495e-06 deg
node 125.7937177085846 3.2152e-05 deg
peri 204.8856296155389 3.7599e-05 deg
M 106.4634413887684 1.8796e-05 deg
tp 2458636.409781634959
(2019-Jun-01.90978163)
0.00010029 TDB
period 1907.438609558588
5.22
1.5877e-05
4.347e-08
d
yr
n .1887347766769332 1.5709e-09 deg/d
Q 3.344892024291324 1.8561e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1510  
   data-arc span      10043 days (27.50 yr)  
   first obs. used      1993-09-18  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51983  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 23:37:32  

Additional Information
 Earth MOID = 1.66431 au 
 Jupiter MOID = 1.98302 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 13.87   n/a MPCxxxxx  
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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