nh_pcnh_006.tpc

PCK containing radii for Pluto, Charon, Nix, Hydra

\begindata

BODY999_RADII = ( 1188.3  1188.3  1188.3 )
BODY901_RADII = (  606.0   606.0   606.0 )
BODY902_RADII = (   24.1    16.4    15.2 )
BODY903_RADII = (   25.65   17.9    16.1 )
BODY904_RADII = (   10      10      10   )
BODY905_RADII = (    3.5     3.5     3.5 )

BODY902_POLE_RA   = (   350.1179532     0.0       0.0 )
BODY902_POLE_DEC  = (   -38.6337107     0.0       0.0 )
BODY902_PM        = (    81.9449154   197.01579   0.0 )
BODY902_JED_EPOCH = ( 2457217.83654080 )
BODY902_CONSTANTS_REF_FRAME   =   (  1 )


BODY903_POLE_RA   = (   349.1           0.0       0.0 )
BODY903_POLE_DEC  = (    37.69          0.0       0.0 )
BODY903_PM        = (   176.3895140   837.7607    0.0 )
BODY903_JED_EPOCH = ( 2457217.83654080 )
BODY903_CONSTANTS_REF_FRAME   =   (  1 )

\begintext

ID   Body     Radii     1-sigma    comments

999  Pluto   1188.3km   +/-1.6km   Nimmo et al., 2016 (3)
901  Charon   606.0km   +/-1.0km   Nimmo et al., 2016 (3)
904  Kerberos  10  km              Weaver et al. 2016 (4)
905  Styx       3.5km              Weaver et al. 2016 (4)


902 Nix Porter et al., 2017 (5), updated via email:
  Tri-axial diameters =  48.3 x 32.8 x 30.4 km
  ra                  = 350.1179532deg
  dec                 = -38.6337107deg
  pm                  = 81.9449154deg
  period              = 1.8272647d/360deg
                      =         1d/197.01579deg
  et0                 = 490133077.125s past J2000 epoch
                      =      5672.83654090 JED past JED 2451545.0
                      =   2457217.8365407987 JED
  Rotation model reference frame is J2000 (SPICE Frame ID 1)


903 Hydra, Porter et al., 2017 (5):
  Tri-axial diameters = 50.3 x 35.8 x 32.2 km
  ra                  =  82.4457646deg
  dec                 =   6.5129206deg
  pm                  = 176.3895140
  period              = 0.4297170d/360deg
                      =         1d/837.760665740deg
  et0                 = 490133077.125s past J2000 epoch
                      =      5672.83654090 JED past JED 2451545.0
                      =   2457217.8365407987 JED
  Rotation model reference frame is J2000 (SPICE Frame ID 1)



Notes
=====

(1) Nimmo et al. Mean radius and shape of Pluto and Charon from New
    Horizons images, 2016.  http://arxiv.org/abs/1603.00821

(2) Based on embargoed materials presented at New Horizons Science Team
    Meeting, 29.-31.July, 2015

(3) Francis Nimmo, Orkan Umurhan, Carey M. Lisse, Carver J. Bierson,
    Tod R. Lauer, Marc W. Buie, Henry B. Throop, Josh A. Kammer,
    James H. Roberts, William B. McKinnon, Amanda M. Zangari, Jeffrey
    M. Moore, S. Alan Stern, Leslie A. Young, Harold A. Weaver, Cathy B.
    Olkin, Kim Ennico, Mean radius and shape of Pluto and Charon from
    New Horizons images, Icarus, Available online 12 July 2016, ISSN
    0019-1035, http://dx.doi.org/10.1016/j.icarus.2016.06.027.

(4) Weaver, H. A.; Buie, M. W.; Buratti, B. J.; Grundy, W. M.; Lauer, T. R.;
    Olkin, C. B.; Parker, A. H.; Porter, S. B.; Showalter, M. R.; Spencer,
    J. R.; Stern, S. A.; Verbiscer, A. J.; McKinnon, W. B.; Moore, J. M.;
    Robbins, S. J.; Schenk, P.; Singer, K. N.; Barnouin, O. S.; Cheng, A.
    F.; Ernst, C. M.; Lisse, C. M.; Jennings, D. E.; Lunsford, A. W.;
    Reuter, D. C.; Hamilton, D. P.; Kaufmann, D. E.; Ennico, K.; Young, L.
    A.; Beyer, R. A.; Binzel, R. P.; Bray, V. J.; Chaikin, A. L.; Cook, J.
    C.; Cruikshank, D. P.; Dalle Ore, C. M.; Earle, A. M.; Gladstone, G. R.;
    Howett, C. J. A.; Linscott, I. R.; Nimmo, F.; Parker, J. Wm.; Philippe,
    S.; Protopapa, S.; Reitsema, H. J.; Schmitt, B.; Stryk, T.; Summers, M.
    E.; Tsang, C. C. C.; Throop, H. H. B.; White, O. L.; Zangari, A. M., The
    small satellites of Pluto as observed by New Horizons, Science, Volume
    351, Issue 6279, id.aae0030 (2016),
    http://dx.doi.org/10.1126/science.aae0030.

(5) Porter, S.B. et al., 2017. Shapes and Poles of Nix and Hydra. Presented
    at the 2017 Asteroids, Comets, and Meteors Meeting.


History
=======

BTCarcich 2017-04-26  Version 006, Updated Nix and Hydra radii, added
                                   Kerberos and Styx radii; added Nix and
                                   Hydra pole positions.
BTCarcich 2016-09-13  Version 005, Restored 1-sigma uncertainties for Pluto
                                   and Charon from online abstract.
BTCarcich 2016-09-13  Version 005, Added new Pluto and Charon values,
                                   removed 1-sigma uncertainties
BTCarcich 2016-05-31  Version 004, cleaning up typos; no substantive change
BTCarcich 2016-05-28  Version 003, updated Pluto and Charon radii
                                   per direction by Ross Beyer, Leslie
                                   Young, via NH-GGI email list
BTCarcich 2015-08-05  Version 002, updated Charon radii per Alan Stern
BTCarcich 2015-07-30  Version 001

