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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2045445657576469 3.9922e-08  
a 2.359242649763601 1.3289e-08 au
q 1.876672386450785 9.6316e-08 au
i 7.279845797124215 4.6719e-06 deg
node 128.2742189113587 3.6546e-05 deg
peri 143.67683394868 3.9843e-05 deg
M 38.5937760085382 2.1478e-05 deg
tp 2459254.603359269880
(2021-Feb-09.10335927)
7.8016e-05 TDB
period 1323.601781062882
3.62
1.1183e-05
3.062e-08
d
yr
n .2719851281183015 2.298e-09 deg/d
Q 2.841812913076418 1.6007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      474  
   data-arc span      8004 days (21.91 yr)  
   first obs. used      1999-07-14  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55782  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:57:27  

Additional Information
 Earth MOID = .865936 au 
 Jupiter MOID = 2.29122 au 
 T_jup = 3.513 
[ 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 16.45   n/a E2021B55  
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

Alternate Designations
 2002 GY1 = 1999 NV29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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