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481. 2009 Saturnian satellites mutual events
ID:
ivo://CDS.VizieR/J/A+A/544/A29
Title:
2009 Saturnian satellites mutual events
Short Name:
J/A+A/544/A29
Date:
21 Oct 2021
Publisher:
CDS
Description:
The photometry of mutual occultations and eclipses of natural planetary satellites can be used to infer very accurate astrometric data. This can be achieved by processing the light curves of the satellites observed during international campaigns of photometric observations of these mutual events. This work focuses on processing the complete database of photometric observations of the mutual occultations and eclipses of the Saturnian satellites made during the international campaign in 2009. The final goal is to derive new accurate astrometric data.
482. Saturnian Satellites positions (1996-2000)
ID:
ivo://CDS.VizieR/J/A+A/383/296
Title:
Saturnian Satellites positions (1996-2000)
Short Name:
J/A+A/383/296
Date:
21 Oct 2021
Publisher:
CDS
Description:
199 frames of CCD images of the major satellites of Saturn (Mimas, Enceladus, Tethys, Dione, Rhea, Titan, Hyperion and Iapetus), obtained on 1-meter telescope at the Yunnan Observatory during the years of 1996-2000, are measured. These positions are compared to the ones computed with the Vienne & Duriez ephemerides (TASS1.7). The calibrated parameters of the CCD scale and orientation are determined by the comparison of their measurement coordinates with computed positions of four bright satellites of Tethy, Dione, Rhea and Titan. A catalog of 913 differential positions has been obtained. Analysis of the data as inter-satellite positions shows that these observations of the above mentioned four satellites have root-mean-square residuals of 0.04 arcsec in the sense of (O-C) (Observed minus Computed). The positional measuring procedure is proved to be good enough to obtain a small dispersion in the observations for the major Saturn satellites. The format of the present catalog are very near to the one of (Strugnell & Taylor, 1990A&AS...83..289S). The coordinates are corrected by all astrometric effects. So, these positions are really astrometric ones in that meaning that, no astrometric consideration is necessary to use them, even if one wants to touch up the calibration. Nevertheless, the raw pixels are also given in order to allow anyone to reduce again the frames.
483. Saturn major satellites observations (1874-2007)
ID:
ivo://CDS.VizieR/J/A+A/493/1183
Title:
Saturn major satellites observations (1874-2007)
Short Name:
J/A+A/493/1183
Date:
21 Oct 2021
Publisher:
CDS
Description:
The last catalogue of observations (Strugnell & Taylor, 1990A&AS...83..289S) includes about 51000 observations (over 3500 nights) of Saturnian satellites from 1874 to 1989. Since 1989, many observations have been published, often in different format, specific to the publication. This new catalogue of observations of the eight major satellites of Saturn includes the observations of Strugnell & Taylor (1990A&AS...83..289S), many other published since 1989 and also old observations forgotten in the previous catalogue. All those observations are tabulated in the consistent format. We precise, for each observation, the corrections applied for reduction like refraction, aberration or phase effects. Furthermore, when it was possible, instrument and catalogue are also indicated. The new catalogue presents more than 130000 observations (over 6000 nights) of the eight major satellites of Saturn from 1874 to 2007.
484. 1990-1994 Saturn's satellites astrometry
ID:
ivo://CDS.VizieR/J/A+AS/121/65
Title:
1990-1994 Saturn's satellites astrometry
Short Name:
J/A+AS/121/65
Date:
21 Oct 2021
Publisher:
CDS
Description:
In this paper, we publish 1206 measurements of positions of the major satellites of Saturn made in 1990, 1991, 1993 and 1994 using CCD detectors attached to the 1-metre Jacobus Kapteyn Telescope on the island of La Palma. Analysis of the data as inter-satellite positions shows that the observations of Tethys, Dione, Rhea and Titan have root-mean-square residuals of 0.08 arcseconds, corresponding to 500km at the distance of Saturn.
485. 1997-2000 Saturn's satellites astrometry
ID:
ivo://CDS.VizieR/J/A+A/422/377
Title:
1997-2000 Saturn's satellites astrometry
Short Name:
J/A+A/422/377
Date:
21 Oct 2021
Publisher:
CDS
Description:
The raw measured pixel coordinates of the major Saturnian satellites obtained using a CCD camera on the 1.56m reflector at the Sheshan station during the period 1997-2000. For each CCD frame JD and decimal fractions of the middle of the exposures are given in universal Time. Satellite numbers conform to IAU numbering system.
486. Saturn's satellites in 1995/97
ID:
ivo://CDS.VizieR/J/A+AS/136/257
Title:
Saturn's satellites in 1995/97
Short Name:
J/A+AS/136/257
Date:
21 Oct 2021
Publisher:
CDS
Description:
In this paper, we publish measurements of 1514 positions of the major satellites of Saturn made in 1995 and 1997 using CCD detectors attached to the 1-metre Jacobus Kapteyn Telescope on the island of La Palma. Analysis of the data as inter-satellite positions shows that the observations of Tethys, Dione, Rhea and Titan have root-mean-square residuals of 0.08 arc-seconds in 1995 and 0.10 arc-seconds in 1997.
487. Search for UMa group companions
ID:
ivo://CDS.VizieR/J/A+A/591/A84
Title:
Search for UMa group companions
Short Name:
J/A+A/591/A84
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the results of a survey to detect low-mass companions of Ursa Major (UMa) group members, carried out in 2003-2006 with NACO at the ESO VLT. While many extra-solar planets and planetary candidates have been found in close orbits around stars by the radial velocity and the transit methods, direct detections at wider orbits are rare. The UMa group, a young nearby stellar association at an age of about 200-600Myr, has not yet been addressed as a whole although its members represent a very interesting sample to search for and characterize substellar companions by direct imaging. Our goal was to find or to provide detection limits on wide substellar companions around nearby UMa group members using high-resolution imaging. We searched for faint companions around 20 UMa group members within 30pc. The primaries were placed below a semi-transparent coronagraph, a rarely used mode of NACO, to increase the dynamic range of the images. In most cases, second epoch images of companion candidates were taken to check whether they share common proper motion with the primary.
488. Second Cape Photographic Catalogue (CPC2)
ID:
ivo://CDS.VizieR/I/265
Title:
Second Cape Photographic Catalogue (CPC2)
Short Name:
I/265
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Second Cape Photographic Catalogue (CPC2) is an astrometric, photographic catalog covering the entire Southern Hemisphere to a limiting magnitude of about 10.5. The Hipparcos Catalogue has been used for a new, plate-by-plate, rigorous reduction. A significant improvement over the release 1 version of the data was achieved. With an average accuracy of 53 mas and a mean epoch of 1968, the CPC2 is a key catalog for proper-motion determination. This release 2 of the CPC2 contains high-quality positions of 266629 stars and an appendix of 8040 other stars. Catalog reduction and construction details are given, as well as a description of the final product, which is available from the US Naval Observatory.
489. Second Cat of Fundamental Stars (SPF2)
ID:
ivo://CDS.VizieR/I/44
Title:
Second Cat of Fundamental Stars (SPF2)
Short Name:
I/44
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Catalogue SPF2 was obtained from observations of the fundamental FK4 stars as a reference stars for SRS, BS and DS star. Observations were made by Pulkovo observers in the declination zone -42 to -90 and +16 to -16 degrees using Repsold Meridian Circle of the Cerro Calan Observatory (Santiago, Chile) from 1963 to 1968.
490. Second Greenwich Catalog of Stars for 1925.0
ID:
ivo://CDS.VizieR/I/34
Title:
Second Greenwich Catalog of Stars for 1925.0
Short Name:
I/34
Date:
21 Oct 2021
Publisher:
CDS
Description:
The observations for these two catalogs were made with the transit circle at the Royal Observatory in Greenwich, England, between the years 1922 and 1930 under the direction of Sir Frank Dyson, Astronomer Royal. Part I contains fundamental stars contained in the annual volumes of Greenwich Observations of the Sun, Moon and Planets. In addition, 232 stars observed at the prime vertical, South of +32dDec., have been observed. Part II contains all stars down to 7.9 mag in the A.G. scale between the limits of 32d and 64d Dec with the addition of 285 fainter stars in the sparse region of the sky from 12h to 16h RA. From internal information, the probable error of one observation of a star is found to be +/-0.35 arcsec in RA and +/-0.28 arcsec in DE. As the number of observations is generally 5, the pe of a position in the catalog, apart from systematic errors, should be +/-0.15 arcsec. In determining the proper motion of the fundamental stars, the positions of this catalogue were combined with the First Greenwich Catalog of Stars for 1925.0 (Observed 1915-1921), the two Pulkova Catalogues and the two Cape Catalogues preceding this catalogue. Note that the problable errors on the proper motions are not included in this electronic version.