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127005 Pratchett (2002 GY1)
Classification: Main-belt Asteroid          SPK-ID: 2127005
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2041729068315991 4.0277e-08  
a 2.35851542637704 1.3546e-08 au
q 1.876970475966471 9.7268e-08 au
i 7.279891622422405 4.6721e-06 deg
node 128.274549404409 3.6664e-05 deg
peri 143.6785920646641 4.0034e-05 deg
M 290.8549879804455 2.1195e-05 deg
tp 2459254.605967539925
(2021-Feb-09.10596754)
7.963e-05 TDB
period 1322.989838927248
3.62
1.1398e-05
3.121e-08
d
yr
n .272110933438391 2.3443e-09 deg/d
Q 2.840060376787609 1.6312e-08 au
  Orbit Determination Parameters
   # obs. used (total)      466  
   data-arc span      7616 days (20.85 yr)  
   first obs. used      1999-07-14  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:08:18  

Additional Information
 Earth MOID = .866387 au 
 Jupiter MOID = 2.29488 au 
 T_jup = 3.514 
[ 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 16.3   n/a MPO412832  
diameter diameter 1.224 km 0.275 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.390   0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

127005 Pratchett           Discovered 2002 Apr. 1 by J. Dellinger and W. G. Dillon at Needville.
Terence David John ("Terry") Pratchett (b. 1948) is a popular English author known for his richly detailed and allegorical "Discworld" series of satirical fantasy novels.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091202/MPCPages.arcLast Updated: 2010-04-12

[ show close-approach data ]
Alternate Designations
 2002 GY1 = 1999 NV29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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