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5502 Brashear (1984 EC)
Classification: Main-belt Asteroid          SPK-ID: 2005502
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1265906031829546 4.8932e-08  
a 2.674686028424282 1.4456e-08 au
q 2.336095910761031 1.33e-07 au
i 12.3300187165267 6.1046e-06 deg
node 352.459109366519 1.8824e-05 deg
peri 232.3624056443448 2.802e-05 deg
M 52.33773922939455 2.1461e-05 deg
tp 2458768.215570684493
(2019-Oct-11.71557068)
9.5102e-05 TDB
period 1597.745637943366
4.37
1.2953e-05
3.546e-08
d
yr
n .2253174669676429 1.8266e-09 deg/d
Q 3.013276146087533 1.6285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1714  
   data-arc span      13764 days (37.68 yr)  
   first obs. used      1981-09-03  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45778  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:08:03  

Additional Information
 Earth MOID = 1.3515 au 
 Jupiter MOID = 2.03649 au 
 T_jup = 3.335 
[ 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 13.0   n/a MPO473842  
diameter diameter 6.465 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 19.2922 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.321   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5502 Brashear (1984 EC)          Discovered 1984-Mar-01 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 EC = 1986 TQ17 = 1990 RU1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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