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27660 Waterwayuni (1978 TR7)
Classification: Main-belt Asteroid          SPK-ID: 2027660
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2100940144203896 2.9933e-08  
a 2.792501183425327 1.0888e-08 au
q 2.205813399525812 8.6319e-08 au
i 9.344603647512947 3.2225e-06 deg
node 88.12075205215534 2.7156e-05 deg
peri 340.2374175657263 2.9412e-05 deg
M 302.8724970851409 1.003e-05 deg
tp 2459270.977545072387
(2021-Feb-25.47754507)		 4.7544e-05 TDB
period 1704.466522389034
4.67		 9.9682e-06
2.729e-08		 d
yr
n .2112097804628117 1.2352e-09 deg/d
Q 3.379188967324843 1.3175e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1739  
   data-arc span      15381 days (42.11 yr)  
   first obs. used      1978-10-02  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46137  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:30:21  

Additional Information
 Earth MOID = 1.22273 au 
 Jupiter MOID = 1.92968 au 
 T_jup = 3.277 
[ 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 13.4   n/a MPO358888  
diameter diameter 9.831 km 3.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.079   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

27660 Waterwayuni           Discovered 1978 Oct. 2 by L. V. Zhuravleva at the Crimean Astrophysical Observatory.
Founded in 1809, St. Petersburg University of Waterway Communications is the oldest transport educational institute in Russia. The University offers training in 26 specialities of higher vocational education in the social sciences, natural sciences and technical engineering.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

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Alternate Designations
 1978 TR7 = 1983 XQ1 = 1999 GW19 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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