1. |
- deLaverny, P, et al.
(författare)
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Long-term UBV(RI)(c) monitoring of 12 southern hemisphere Long Period Variables
- 1997
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Ingår i: ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES. - : EDITIONS PHYSIQUE. - 0365-0138. ; 122:3, s. 415-432
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A program of UBV(RI)(c) photometric observations of twelve southern hemisphere Long Period Variables (LPV or Miras) has been carried out at the European Southern Observatory. Each star was observed on at least 11 occasions up to 29 over a 4-year period. A
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2. |
- JORDA, L, et al.
(författare)
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COMET P/WIRTANEN, SUMMARY OF OBSERVATIONAL DATA
- 1995
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Ingår i: PLANETARY AND SPACE SCIENCE. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0032-0633. ; 43:3-4, s. 575-579
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- P/Wirtanen is now the main target of the Rosetta mission. The orbit of this Jupiter family comet is perturbed by frequent approaches to Jupiter. The last one occurred in 1984, and placed the comet on an orbit with reduced perihelion distance. Since no obs
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3. |
- Magnusson, P, et al.
(författare)
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Photometric observations and modeling of asteroid 1620 Geographos
- 1996
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Ingår i: ICARUS. - : ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS. - 0019-1035. ; 123:1, s. 227-244
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Photometric observations of 1620 Geographos in 1993 and 1993 are presented and, in combination with previously published data, are used to derive models of Geographos, We estimate that the sidereal period of rotation is 0.21763860 +/- 0.00000003 days (5(h
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4. |
- Rickman, H, et al.
(författare)
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Comet 46P/Wirtanen, the target of the Rosetta mission
- 1998
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Ingår i: SPACE EXPLORATION OF THE OUTER SPACE SOLAR SYSTEM AND COMETARY NUCLEI. - : PERGAMON PRESS LTD. - 0273-1177. ; 21:11, s. 1491-1504
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We present a summary of the observational data on periodic comet 46P/Wirtanen, emphasizing the recent estimates of H2O production rate from narrow-band photometry and CCD imaging with ensuing estimates of the photometric cross-section of the nucleus. A di
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5. |
- Thomas, N, et al.
(författare)
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Osiris - The optical, spectroscopic and infrared remote imaging system for the Rosetta orbiter
- 1998
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Ingår i: SPACE EXPLORATION OF THE OUTER SPACE SOLAR SYSTEM AND COMETARY NUCLEI. - : PERGAMON PRESS LTD. - 0273-1177. ; 21:11, s. 1505-1515
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The scientific objectives, design, and implementation of the Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) for the International Rosetta Mission are described. The instrument comprises two camera systems with a common electronics box
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