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6897 Tabei (1987 VQ)
Classification: Main-belt Asteroid          SPK-ID: 2006897
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1741498107648377 1.7733e-08  
a 2.381699784629731 6.0896e-09 au
q 1.966927217837809 4.3794e-08 au
i 1.617010255532492 7.5085e-07 deg
node 190.9420118798062 3.6683e-05 deg
peri 263.2864809810134 3.7554e-05 deg
M 324.6345964274802 7.8121e-06 deg
tp 2459332.387935647070
(2021-Apr-27.88793565)		 2.9302e-05 TDB
period 1342.545313687258
3.68		 5.149e-06
1.41e-08		 d
yr
n .2681473737458228 1.0284e-09 deg/d
Q 2.796472351421653 7.1501e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2220  
   data-arc span      12193 days (33.38 yr)  
   first obs. used      1987-10-22  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48368  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:12:21  

Additional Information
 Earth MOID = .984205 au 
 Jupiter MOID = 2.38218 au 
 T_jup = 3.517 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457016.5 (2014-Dec-25.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1737334238996955 1.7787e-08  
q 1.968037005630878 4.392e-08 au
tp 2456643.460738365263
(2013-Dec-16.96073837)		 2.7587e-05 TDB
node 191.0567214364228 3.6668e-05 deg
peri 262.5532523503751 3.754e-05 deg
i 1.616975006587828 7.5228e-07 deg
   Orbit Determination Parameters
   # obs. used (total)      2220  
   data-arc span      12193 days (33.38 yr)  
   first obs. used      1987-10-22  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48368  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:12:21  

Additional Information
 Jupiter MOID = 2.38218 au 
 T_jup = 3.517 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.163644670109907E-16 -7.763457219282535E-16 -2.052537802609777E-13 1.107755208615112E-13 -1.68546144728793E-13 2.713810097709769E-15
q -7.763457219282535E-16 1.928924433951125E-15 4.885938027133249E-13 -2.668802587201821E-13 4.074934073898213E-13 -6.536483596342823E-15
tp -2.052537802609777E-13 4.885938027133249E-13 7.610399617735989E-10 -3.728433832980618E-11 2.052168464898185E-10 -1.176913411143017E-12
node 1.107755208615112E-13 -2.668802587201821E-13 -3.728433832980618E-11 1.344560450030738E-9 -1.357727810664237E-9 2.156978965209486E-11
peri -1.68546144728793E-13 4.074934073898213E-13 2.052168464898185E-10 -1.357727810664237E-9 1.409236463970658E-9 -2.193387513382041E-11
i 2.713810097709769E-15 -6.536483596342823E-15 -1.176913411143017E-12 2.156978965209486E-11 -2.193387513382041E-11 5.659181869759515E-13

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.15   n/a E2021B10  
diameter diameter 4.525 km 0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.862 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Ryan, W.H. (2004) Minor Planet Bull. 31, 73-74.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.238   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6897 Tabei           Discovered 1987 Nov. 15 by A. Mrkos at Klet.
In 1975, Junko Tabei (b. 1939) became the first woman to scale the summit of Mount Everest. The name was suggested by M. Tichy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1987 VQ = 1992 AZ 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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