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JPL Small-Body Database Browser
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13414 Grantham (1999 UN25)
Classification: Main-belt Asteroid          SPK-ID: 2013414
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06436591271517898 4.3274e-08  
a 2.836044212724324 1.3784e-08 au
q 2.653499638471722 1.2033e-07 au
i 1.216493299035087 4.0352e-06 deg
node 308.8357610414353 0.00019901 deg
peri 24.36399626937486 0.00020192 deg
M 178.3546332567697 3.691e-05 deg
tp 2458136.229245429025
(2018-Jan-17.72924543)
0.00017683 TDB
period 1744.487743122544
4.78
1.2718e-05
3.482e-08
d
yr
n .2063643046041805 1.5045e-09 deg/d
Q 3.018588786976927 1.4672e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2034  
   data-arc span      11164 days (30.57 yr)  
   first obs. used      1989-09-27  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:52:29  

Additional Information
 Earth MOID = 1.64303 au 
 Jupiter MOID = 2.21629 au 
 T_jup = 3.308 
[ 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 13.8   n/a MPO458953  
diameter diameter 4.390 km 0.486 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.365   0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13414 Grantham           Discovered 1999 Oct. 29 by the Catalina Sky Survey.
James Grantham (b. 1966) is the observatory operations supervisor at the Steward Observatory Mt. Lemmon Station. He played a vital role defending the telescopes at both Mt. Lemmon and Mt. Bigelow during the 2002 Bullock and 2003 Aspen wildfires. He enjoys working on his family's ranch near Arivaca, Arizona.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20101128/MPCPages.arcLast Updated: 2010-12-06

Alternate Designations
 1999 UN25 = 1989 SH12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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