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7971 Meckbach (9002 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2007971
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1085536960249537 4.0543e-08  
a 2.574015739268201 1.1474e-08 au
q 2.294596817144234 1.0348e-07 au
i 14.01437410589053 4.5765e-06 deg
node 199.5511992320983 1.4886e-05 deg
peri 10.97813841882563 2.3341e-05 deg
M 300.4146659235336 2.0374e-05 deg
tp 2459250.161802655597
(2021-Feb-04.66180266)
8.5882e-05 TDB
period 1508.395486054894
4.13
1.0085e-05
2.761e-08
d
yr
n .2386641986986818 1.5957e-09 deg/d
Q 2.853434661392168 1.2719e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1833  
   data-arc span      21734 days (59.50 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46648  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:52:25  

Additional Information
 Earth MOID = 1.29149 au 
 Jupiter MOID = 2.10771 au 
 T_jup = 3.378 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456550.5 (2013-Sep-15.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090343166049647 4.0452e-08  
q 2.293466855817907 1.0334e-07 au
tp 2456235.331916477195
(2012-Nov-03.83191648)
8.1647e-05 TDB
node 199.5869558688381 1.4894e-05 deg
peri 11.35875649499758 2.3315e-05 deg
i 14.00987525302383 4.5754e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1833  
   data-arc span      21734 days (59.50 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46648  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:52:25  

Additional Information
 Jupiter MOID = 2.10771 au 
 T_jup = 3.378 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.636366096331034E-15 -4.160219960494167E-15 3.749680335112867E-13 -2.481964753542098E-15 7.144065387818496E-14 -2.065353872319559E-15
q -4.160219960494167E-15 1.067840645881971E-14 -9.016084367846973E-13 7.239922620367324E-15 -1.663113286642565E-13 5.559528925145738E-15
tp 3.749680335112867E-13 -9.016084367846973E-13 6.666312951536514E-9 1.162059064037228E-11 1.476375785636103E-9 -4.703926270594391E-12
node -2.481964753542098E-15 7.239922620367324E-15 1.162059064037228E-11 2.218276310384154E-10 -2.122591149728412E-10 8.846068382069777E-12
peri 7.144065387818496E-14 -1.663113286642565E-13 1.476375785636103E-9 -2.122591149728412E-10 5.435843913531757E-10 -9.603743050222135E-12
i -2.065353872319559E-15 5.559528925145738E-15 -4.703926270594391E-12 8.846068382069777E-12 -9.603743050222135E-12 2.093386447734089E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO458909  

7971 Meckbach           Discovered 1960 Oct. 17 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named in memory of Wolfgang Meckbach (1919-1998), microwave spectroscopist who emigrated from Germany to Argentina in 1951, where he became the co-founder of the Centro Atómico Bariloche and founder of the Bariloche school of atomic collision physics. In spite of difficult times, he excelled as a teacher and researcher in atomic collision physics using ion penetration through matter. By sad coincidence, the name was proposed just as Meckbach suffered a fatal heart attack while skiing. Name proposed and citation prepared by K.-O. Groeneveld.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19981208/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 9002 P-L = 1981 VD2 = 1992 HP4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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