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3231 Mila (1972 RU2)
Classification: Main-belt Asteroid          SPK-ID: 2003231
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1272585491270891 1.6687e-08  
a 2.445122342006245 7.8274e-09 au
q 2.1339596203243 4.1243e-08 au
i 6.375131558872502 2.9632e-07 deg
node 324.3183524871749 2.3287e-06 deg
peri 54.69172289956352 9.6551e-06 deg
M 243.9658558685913 8.6314e-06 deg
tp 2459846.624467203100
(2022-Sep-24.12446720)
3.4596e-05 TDB
period 1396.526939601505
3.82
6.7059e-06
1.836e-08
d
yr
n .2577823526288187 1.2378e-09 deg/d
Q 2.75628506368819 8.8235e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2722  
   data-arc span      26242 days (71.85 yr)  
   first obs. used      1949-08-21  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42616  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:19:15  

Additional Information
 Earth MOID = 1.14183 au 
 Jupiter MOID = 2.74197 au 
 T_jup = 3.480 
[ 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 13.46   n/a MPO614063  
diameter diameter 13.424 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3231 Mila (1972 RU2)          Discovered 1972-Sep-04 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1972 RU2 = 1949 QJ1 = 1949 QN1 = 1955 EL = 1972 QJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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