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25399 Vonnegut (1999 VN20)
Classification: Main-belt Asteroid          SPK-ID: 2025399
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08918195433249004 2.2079e-08  
a 2.584563283068518 1.1927e-08 au
q 2.35406687838847 5.6691e-08 au
i 22.48462706508214 1.5987e-06 deg
node .3994050983121035 2.2074e-06 deg
peri 166.7905615551578 1.4608e-05 deg
M 317.4317366916859 1.8156e-05 deg
tp 2459575.957913437902
(2021-Dec-27.45791344)
7.7243e-05 TDB
period 1517.676405300438
4.16
1.0505e-05
2.876e-08
d
yr
n .2372047155393015 1.6419e-09 deg/d
Q 2.815059687748565 1.299e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2063  
   data-arc span      10292 days (28.18 yr)  
   first obs. used      1993-03-20  
   last obs. used      2021-05-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4395  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:32:15  

Additional Information
 Earth MOID = 1.36261 au 
 Jupiter MOID = 2.15007 au 
 T_jup = 3.310 
[ 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 13.10   n/a MPCxxxxx  
diameter diameter 6.761 km 0.394 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.597 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.267   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

25399 Vonnegut           Discovered 1999 Nov. 11 by C. W. Juels at Fountain Hills.
Kurt Vonnegut (b. 1922) is a revolutionary U.S. science-fiction writer who crossed over into mainstream literature and is often referred to as the "Mark Twain of the second half of the twentieth century". He is most famous for his novel Slaughterhouse 5.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1999 VN20 = 2000 XC50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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