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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1587520819948935 4.8286e-08  
a 2.268153645332337 1.2689e-08 AU
q 1.908079531851521 1.0897e-07 AU
i 3.155351566163691 5.8658e-06 deg
node 121.5933587212988 9.5743e-05 deg
peri 275.9234100117612 9.784e-05 deg
M 69.65595202988386 2.0449e-05 deg
tp 2456759.085770880202
(2014-Apr-11.58577088)
7.0229e-05 JED
period 1247.691258972979
3.42
1.047e-05
2.867e-08
d
yr
n .2885329182287687 2.4212e-09 deg/d
Q 2.628227758813153 1.4703e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1120  
   data-arc span      16048 days (43.94 yr)  
   first obs. used      1971-04-16  
   last obs. used      2015-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48759  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:31:46  

Additional Information
 Earth MOID = .918182 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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