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JPL Small-Body Database Browser
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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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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2094508840324694 3.4816e-08  
a 2.796225805759335 1.6529e-08 au
q 2.210553838788638 9.5073e-08 au
i 9.344265636753681 4.145e-06 deg
node 88.12376401802599 3.0705e-05 deg
peri 339.882044808281 3.3386e-05 deg
M 218.8244135111323 1.3182e-05 deg
tp 2459270.251794363259
(2021-Feb-24.75179436)
6.4941e-05 TDB
period 1707.877770989717
4.68
1.5143e-05
4.146e-08
d
yr
n .2107879182661764 1.869e-09 deg/d
Q 3.381897772730032 1.9991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1360  
   data-arc span      14529 days (39.78 yr)  
   first obs. used      1978-10-02  
   last obs. used      2018-07-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50921  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:04:48  

Additional Information
 Earth MOID = 1.22728 au 
 Jupiter MOID = 1.92819 au 
 T_jup = 3.275 
[ 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

[ show close-approach data ]
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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