J/other/PSS/260.ivo://CDS.VizieR/J/other/PSS/260.06085CDSFang X.Q.Peng Q.Y.Lu X.Guo B.F.2025-09-22T06:54:32Z2025-05-30T15:20:03ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsolar-systemsolar-system-planetsastrometryDuring ground-based observations of satellites near a bright planet, the satellite images are often affected by the planet's halo, introducing significant uncertainty in their astrometric positions. To address this issue, we employed a narrow-band methane filter for observations of the five major Uranian satellites, which makes them easily discernible on CCD frames without requiring halo removal procedures. We systematically evaluated the astrometric performance of this Methane filter and compared it to that of the commonly used Clear and Cousins-I filters. Totally, the positional precision for most of the four brightest satellites is approximately 30mas in both right ascension and declination, comparable to the Cousins-I filter and superior to the Clear filter. On the other hand, the faint satellite Miranda achieves a precision of better than 80mas after image stacking in the methane band images. Based on our experiments, we recommend using the Methane filter for observing objects with an apparent visual magnitude brighter than 15, as it offers a sufficient signal-to-noise ratio (SNR) of approximately 55 within a reasonable exposure time of 200s using a 0.8m telescope.2025P&SS..26006085Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/PSS/260.06085CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/107/559 : Position of Uranian satellites (Veiga+, 1994)J/A+AS/113/557 : Uranian satellites (Veiga+, 1995)J/A+AS/138/247 : Uranian satellites 1995-1998 (Veiga+, 1999)J/A+A/391/775 : Uranian satellites in 1995/97 (Shen+, 2002)J/A+A/454/683 : Position of Uranian satellites (Veiga+, 2006)J/other/PSS/134.96 : 2007-2016 Pulkovo Uranian satellites obs. (Ershova+, 2017)J/other/PSS/210.1 : Astrometry of the 5 largest Uranian sat. (Camargo+, 2022)J/AJ/164/37 : 2008-2014 precise position of 5 Uranian satellitesJ/ApJS/273/25 : Positions of 5 Uranian satellites from Yunnan obs.https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/PSS/260.06085https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/PSS/260.06085http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/PSS/260.06085https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/PSS/260.06085https://vizier.iucaa.in/viz-bin/votable?-source=J/other/PSS/260.06085http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/PSS/260.06085GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/PSS/260.06085/table (Uranian satellites astrometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/PSS/260.06085/table?https://vizier.iucaa.in/viz-bin/conesearch/J/other/PSS/260.06085/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/PSS/260.06085/table?GETtext/xml+votable180.050000true46.42634517.1219252780.0055555555555555566/245 247 395 417https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/PSS/260.06085?format=asciidefaultJ/other/PSS/260.06085/tableUranian satellites astrometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSat[U1 U2 U3 U4 U5] Uranian satellitemeta.id;meta.maincharJDExposure middle time of each CCD frame in Julian Date (UTC)dtime.epochdoubleRAJ2000Observed topocentric astrometric position in right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Observed topocentric astrometric position in declination (J2000)pos.eq.dec;meta.mainObsCodeIAU code of the observatorymeta.id;obscharFilt[MCI] Filter used (1)instr.setup;instr.filterchar