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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 | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1269600215678771 3.3499e-08  
a 2.445651188199045 8.2759e-09 au
q 2.13515126059779 8.3287e-08 au
i 6.374942129248327 4.5366e-06 deg
node 324.3167637422135 2.5615e-05 deg
peri 54.74422202746728 3.0893e-05 deg
M 141.8293431327996 1.6692e-05 deg
tp 2458450.131218870991
(2018-Nov-27.63121887)
6.4128e-05 TDB
period 1396.980038333286
3.82
7.0909e-06
1.941e-08
d
yr
n .2576987430897796 1.3081e-09 deg/d
Q 2.7561511158003 9.3267e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2582  
   data-arc span      25863 days (70.81 yr)  
   first obs. used      1949-08-21  
   last obs. used      2020-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43041  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:02:04  

Additional Information
 Earth MOID = 1.14382 au 
 Jupiter MOID = 2.74025 au 
 T_jup = 3.479 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO452208  
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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1974-Feb-24 03:22 < 00:01 Hebe 0.0393614635725176 0.0393594317659238 0.0393634956537702 6.58669079165232 6.58669076767399 2442102.640347131 0.559110820920288 197.861122652214 26.7681395912623 60.1082490808363 191241.771267547 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:02:12 2020-Nov-13 04:02
2024-Feb-27 07:15 < 00:01 Juno 0.0231527610558379 0.0231516023835887 0.0231539197890586 6.65137270429392 6.65137262529305 2460367.802110645 0.347535545108738 93.8614708111986 34.6146226029595 57.9952878686014 87043.6628574392 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:02:12 2020-Nov-13 04:02

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