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8438 Marila (4825 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2008438
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .158490401769311 5.9288e-08  
a 2.267368432580186 1.5511e-08 AU
q 1.9080122987415 1.3847e-07 AU
i 3.155294091947076 5.9609e-06 deg
node 121.5939893270572 0.00011548 deg
peri 275.8534584627289 0.00011723 deg
M 12.01213442730043 2.0692e-05 deg
tp 2456758.889852656781
(2014-Apr-11.38985266)
7.1526e-05 JED
period 1247.043407166184
3.41
1.2797e-05
3.504e-08
d
yr
n .2886828140313688 2.9623e-09 deg/d
Q 2.626724566418873 1.797e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      947  
   data-arc span      15573 days (42.64 yr)  
   first obs. used      1971-04-16  
   last obs. used      2013-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49982  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:15:49  

Additional Information
 Earth MOID = .917101 AU 
 T_jup = 3.596 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO267741  

8438 Marila           Discovered 1971 May 13 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named for aythya marila, or greater scaup.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990202/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 4825 T-1 = 1986 TH15 = 1991 AX2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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