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30835 Waterloo (1990 WB7)
Classification: Main-belt Asteroid          SPK-ID: 2030835
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379955361890376 4.2591e-08  
a 2.386835170357773 7.8954e-09 au
q 2.057462571229399 1.034e-07 au
i 5.284218537718701 4.6358e-06 deg
node 175.1703521611363 3.377e-05 deg
peri 186.7543352120767 3.5673e-05 deg
M 159.6922612364364 1.165e-05 deg
tp 2458799.033664844596
(2019-Nov-11.53366484)
4.3148e-05 TDB
period 1346.889817894754
3.69
6.6831e-06
1.83e-08
d
yr
n .267282442273337 1.3262e-09 deg/d
Q 2.716207769486147 8.9849e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1280  
   data-arc span      16643 days (45.57 yr)  
   first obs. used      1975-10-13  
   last obs. used      2021-05-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54927  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 19:50:12  

Additional Information
 Earth MOID = 1.05376 au 
 Jupiter MOID = 2.73647 au 
 T_jup = 3.516 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.20   n/a MPCxxxxx  

30835 Waterloo           Discovered 1990 Nov. 21 by E. W. Elst at the European Southern Observatory.
Waterloo is a small village near Brussels, known as the site of the 1815 battle. Napoleon's French forces were defeated by the Austrian, German and English armies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-06-02Last Updated: 2015-06-04

Alternate Designations
 1990 WB7 = 1975 TG7 = 1996 HO2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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