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2986 Mrinalini (2525 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2002986
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606421462345743 5.3452e-08  
a 3.169324488683649 2.4783e-08 AU
q 2.660197400707712 1.7573e-07 AU
i 2.536708905907008 5.3974e-06 deg
node 51.28212766906561 0.00012655 deg
peri 303.5443215724331 0.0001277 deg
M 165.5710204978323 1.788e-05 deg
tp 2455852.670304113736
(2011-Oct-18.17030411)
9.8689e-05 JED
period 2060.859983184814
5.64
2.4172e-05
6.618e-08
d
yr
n .1746843565003688 2.0489e-09 deg/d
Q 3.678451576659584 2.8764e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1491  
   data-arc span      21814 days (59.72 yr)  
   first obs. used      1954-08-27  
   last obs. used      2014-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48279  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:23:59  

Additional Information
 Earth MOID = 1.65527 AU 
 T_jup = 3.181 
[ 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 12.0 mag n/a MPO263372  
diameter diameter 20.53 km 1.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
rotation period rot_per 15.9 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Galad, A. (2009) Minor Planet Bul. 36, 183-186.]
geometric albedo albedo 0.0729   0.009 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9

2986 Mrinalini (2525 P-L)          Discovered 1960-Sep-24 by PLS at Palomar (675)
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 2525 P-L = 1977 QG1 = 1980 DB4 = 1986 ET3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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