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3970 Herran (1979 ME9)
Classification: Main-belt Asteroid          SPK-ID: 2003970
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1339449087102389 3.3515e-08  
a 2.55633982585279 1.0732e-08 au
q 2.21393112124659 8.8545e-08 au
i 15.13093937855928 4.5259e-06 deg
node 21.67654365499634 1.0378e-05 deg
peri 303.8257252038017 2.0466e-05 deg
M 2.272027985507302 1.6249e-05 deg
tp 2458991.078121886964
6.7404e-05 TDB
period 1492.884833430256
n .2411438524516421 1.5186e-09 deg/d
Q 2.89874853045899 1.217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2637  
   data-arc span      23742 days (65.00 yr)  
   first obs. used      1955-10-24  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:55:33  

Additional Information
 Earth MOID = 1.24136 au 
 Jupiter MOID = 2.56646 au 
 T_jup = 3.377 
[ 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 12.3   n/a MPO384788  
diameter diameter 8.564 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 8.09 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Kim, M.-J.; Choi, Y.-J.; Moon, H.-K.; Byun, Y.-I.; et al. (2014) Astron. J. 147, A56.]
geometric albedo albedo 0.264   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

3970 Herran           Discovered 1979 June 28 by C. Torres at Cerro El Roble.
Jose Antonio Ruiz de la Herran Villagomez (b. 1925), currently technical advisor of the Museum Universum in Mexico City, has been active in astronomy both as a professional and an amateur. He was involved in the design and installation of Mexico's largest telescopes and is widely known for his public outreach.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031110/MPCPages.arcLast Updated: 2003-11-12

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
2084-Feb-08 12:20 < 00:01 Hebe 0.0311351334501777 0.0311312098483428 0.0311390587528003 7.65152252746465 7.65152250136955 2482264.013743752 0.84155319721997 421.773905001923 46.7750353026707 -63.0478296361206 88885.8632252452 T 40 CATAB v2.0f-lin.ifort 2020-Nov-13 03:55:41 2020-Nov-13 03:55

Alternate Designations
 1979 ME9 = 1963 UT = 1971 ST1 = 1979 RH = 1982 FQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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