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7887 Bratfest (1993 SU2)
Classification: Main-belt Asteroid          SPK-ID: 2007887
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09982571027327589 4.0736e-08  
a 2.578933382233408 9.4522e-09 au
q 2.321489525604497 1.0247e-07 au
i 13.7409159131795 3.5259e-06 deg
node 295.0820682983127 1.69e-05 deg
peri 102.4892288792643 2.5142e-05 deg
M 136.3286752405117 1.8159e-05 deg
tp 2458427.646822579784
(2018-Nov-05.14682258)
7.6194e-05 TDB
period 1512.720221974216
4.14
8.3165e-06
2.277e-08
d
yr
n .2379818784534873 1.3084e-09 deg/d
Q 2.836377238862319 1.0396e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2297  
   data-arc span      16975 days (46.48 yr)  
   first obs. used      1973-12-25  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43328  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:44:46  

Additional Information
 Earth MOID = 1.37555 au 
 Jupiter MOID = 2.52669 au 
 T_jup = 3.379 
[ 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 12.2   n/a MPO332893  
diameter diameter 10.641 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.225   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

7887 Bratfest           Discovered 1993 Sept. 18 by C. W. Hergenrother at Catalina Station.
Bratfest, which celebrates its 25th anniversary in 2003, is an annual Oktoberfest-style party organized by graduate students of the University of Arizona's Lunar and Planetary Laboratory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1993 SU2 = 1973 YQ3 = 1985 VL5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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