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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1339449046300291 3.3936e-08  
a 2.556339830011365 1.183e-08 au
q 2.213931135278548 9.0335e-08 au
i 15.13093998850542 4.6372e-06 deg
node 21.67654720386216 1.1687e-05 deg
peri 303.8257252807431 2.1469e-05 deg
M 2.272022837964783 1.7325e-05 deg
tp 2458991.078143210329
(2020-May-21.57814321)		 7.1853e-05 TDB
period 1492.884837073126
4.09		 1.0363e-05
2.837e-08		 d
yr
n .2411438518632139 1.6739e-09 deg/d
Q 2.898748524744183 1.3414e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2422  
   data-arc span      23709 days (64.91 yr)  
   first obs. used      1955-10-24  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35805  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:49:52  

Additional Information
 Earth MOID = 1.24136 au 
 Jupiter MOID = 2.56646 au 
 T_jup = 3.377 
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Orbital Elements at Epoch 2457216.5 (2015-Jul-13.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1341171796683744 3.4069e-08  
q 2.213092131789333 9.0829e-08 au
tp 2457500.608564325093
(2016-Apr-22.10856433)		 7.3884e-05 TDB
node 21.73384429990219 1.1678e-05 deg
peri 304.3606938112603 2.1419e-05 deg
i 15.13889505955986 4.6391e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2422  
   data-arc span      23709 days (64.91 yr)  
   first obs. used      1955-10-24  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35805  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:49:52  

Additional Information
 Jupiter MOID = 2.56646 au 
 T_jup = 3.377 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.160685929956385E-15 -3.07660876653794E-15 1.264246215961187E-12 -6.104459324900797E-15 2.994431053014385E-13 1.421627159736442E-15
q -3.07660876653794E-15 8.249871503883643E-15 -3.450241598566919E-12 1.587488778504205E-14 -8.212607131413627E-13 -3.142820784282857E-15
tp 1.264246215961187E-12 -3.450241598566919E-12 5.458867209506609E-9 -2.228834388397003E-11 1.333710747189776E-9 -3.707632533772278E-12
node -6.104459324900797E-15 1.587488778504205E-14 -2.228834388397003E-11 1.363754637316517E-10 -1.363963633862805E-10 8.967220950520885E-13
peri 2.994431053014385E-13 -8.212607131413627E-13 1.333710747189776E-9 -1.363963633862805E-10 4.587580247253665E-10 -1.727620456296148E-12
i 1.421627159736442E-15 -3.142820784282857E-15 -3.707632533772278E-12 8.967220950520885E-13 -1.727620456296148E-12 2.15208594621166E-11

[ 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] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
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] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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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Alternate Designations
 1979 ME9 = 1963 UT = 1971 ST1 = 1979 RH = 1982 FQ3 
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