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JPL Small-Body Database Browser
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9481 Menchu (2559 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2009481
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09460329584231546 4.5024e-08  
a 2.286692995955866 7.2179e-09 au
q 2.070364301958902 1.0353e-07 au
i 2.740529677648812 3.5745e-06 deg
node 74.48053791848804 9.7409e-05 deg
peri 93.73326358406463 9.904e-05 deg
M 181.8108866452248 1.9189e-05 deg
tp 2459225.656693166460
(2021-Jan-11.15669317)
6.8175e-05 TDB
period 1263.019975254255
3.46
5.9801e-06
1.637e-08
d
yr
n .2850311214812968 1.3495e-09 deg/d
Q 2.503021689952829 7.9008e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1766  
   data-arc span      21611 days (59.17 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48771  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:10:32  

Additional Information
 Earth MOID = 1.07926 au 
 Jupiter MOID = 2.46549 au 
 T_jup = 3.594 
[ 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 14.1   n/a MPO439151  
diameter diameter 4.671 km 0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.203   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9481 Menchú           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named in honor of Rigoberta Menchú Tum (b. 1959), a Mayan Indian from Guatemala who has campaigned for human rights, especially for indigenous people. Menchú, whose parents and brother were killed by government troops, became a symbol of peace and reconciliation in a country devastated by civil war. She was awarded the Nobel Peace prize in 1992. According to Nobel Committee Chairman Sejersted, Menchú belongs to "...the shining individual examples of people who manage to preserve their humanity in brutal and violent surroundings. Such people give us hope that there are ways out of a vicious circle."
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 2559 P-L = 1981 UF26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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