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12626 Timmerman (1116 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2012626
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1079503851095918 4.6733e-08  
a 2.688162011934143 1.2116e-08 au
q 2.397973887508877 1.2887e-07 au
i 1.660240193619789 3.968e-06 deg
node 259.0315307542388 0.00015528 deg
peri 125.5707572515773 0.00015609 deg
M 302.8746558097797 1.7964e-05 deg
tp 2459651.951181186648
(2022-Mar-13.45118119)
8.1002e-05 TDB
period 1609.835818598656
4.41
1.0884e-05
2.98e-08
d
yr
n .2236252888902522 1.5119e-09 deg/d
Q 2.978350136359408 1.3424e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1387  
   data-arc span      18353 days (50.25 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53323  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 16:50:10  

Additional Information
 Earth MOID = 1.40138 au 
 Jupiter MOID = 2.46115 au 
 T_jup = 3.364 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.51   n/a MPCxxxxx  
diameter diameter 6.762 km 0.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12626 Timmerman           Discovered 1971 Mar. 25 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Dutch poetess Petronella Johanna de Timmerman (1724-1786) was educated in astronomy and mathematics at the observatory of Jan de Munck in Middelburg. In 1769 she married the Utrecht astronomer Jan Frederik Hennert and assisted him in his work. The name was suggested by R. H. van Gent.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090409/MPCPages.arcLast Updated: 2009-04-10

Alternate Designations
 1116 T-1 = 1995 WL22 = 1997 CG5 = 1998 KV21 = 1999 RP130 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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