Galileo Photometry of Asteroid 243 Ida

Details Galileo Photometry of Asteroid 243 Ida Galileo Photometry of Asteroid 243 Ida

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996icar..120...48h&link_type=abstract

Icarus, Volume 120, Issue 1, pp. 48-65.

Computer Science

64

Scientific paper

Galileo imaging observations over phase angles 19.5 deg to 109.8 deg are combined with near-opposition Earth-based data to derive the photometric properties of Ida. To first order these properties are uniform over the surface and well modeled at lambda = 0.55 μm by Hapke parameters omega~_0 = 0.22, h = 0.020, B_0 = 1.5, g = -0.33, and theta = 18 deg with corresponding geometric albedo p = 0.21+/-^0.03_0.01 and Bond albedo A_B = 0.081+/-^0.017_0.008. Ida's photometric properties are more similar to those of ``average S-asteroids'' (P. Helfenstein and J. Veverka 1989, Asteroids II, Univ. of Arizona Press, Tucson) than are those of 951 Gaspra. Two primary color units are identified on Ida: Terrain A exhibits a spectrum with relatively shallower 1-μm absorption and a relatively steeper red spectral slope than average Ida, while Terrain B has a deeper 1-μm absorption and a less steep red slope. The average photometric properties of Ida and Terrain A are similar while those of Terrain B differ mostly in having a slightly higher value of omega~_0 (0.22 versus 0.21), suggesting that Terrain B consists of slightly brighter, more transparent regolith particles. Galileo observations of Ida's satellite Dactyl over phase angles 19.5 deg to 47.6 deg suggest photometric characteristics similar to those of Ida, the major difference being Dactyl's slightly lower albedo (0.20 compared to 0.21).

Affiliated with

Also associated with

No associations

Rating

Galileo Photometry of Asteroid 243 Ida does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Galileo Photometry of Asteroid 243 Ida, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galileo Photometry of Asteroid 243 Ida will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1610193