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Larson, S. M.

Publications and source records attributed to Larson, S. M..

41 records · Page 3
All sourcesNASA NTRSDOE OSTI
NASA NTRS1972

Photographic observations of the occultation of Beta Scorpii by Jupiter

The occultation of the multiple star Beta Scorpii by Jupiter was observed visually and photographically from the Bosscha Observatory in Lembang (Java), Indonesia, on May 13, 1971. The photographs recorded the dimming of the stars as the light was differentially refracted by the Jovian atmosphere, and gave support to a scale height greater than 8 km. Measurement of the position of the brightest component at Beta Scorpii during ingress shown refraction of approximately 1.4 sec before becoming unobservable.

Larson, S. M.↗
NASA NTRS1972

Photographic observations of Comet Bennett, 1970II.

Direct photography of Comet Bennett with a range of focal lengths shows structure in the coma and strong Type I and Type II tails. The Type I tail shows motion in 15 minutes. The inner coma contains spiral-shaped jets of a type observed visually on occasion in the past but not photographed before. The spiral shape is apparently due to the rotation of the nucleus. On the assumption that the outward velocity of the jets is 0.6 km/sec, as estimated by Delsemme, a rotation period of 1.4-1.5 days is derived for the nucleus. The rotation is direct (i.e., in the sense of the comet's orbital motion).

Larson, S. M.↗