//scs#pgs-pos-index
Stars with orbits (what should have been
FK6, part 2)
CREATE VIEW \curtable AS ((
SELECT \colNames
FROM apfs.fk6orbits)
UNION (
SELECT comname, localid, raj2000, dej2000, pmra, pmde, pres, v_rad,
0 as period, NULL as cc, NULL as a_major, NULL as tperi,
NULL as incl, NULL as nodelength, NULL as peraparg
FROM fk6.fk6join))
data/withorbits.txtcio
apfs_catquery
This service computes apparent places of
certain
fundamental stars (from the FK6 catalogue). The positions can
be given either in the CIO system (default) or the old equinox
system.
If you give a position or an object resolvable by Simbad, the
service will choose the nearest FK6 star for the ephemeris.
We added star 907 (Polaris); for this, we use the orbit given by
2000A&A...360..399W.
The epoch propagation to bring catalogues on the FK6 system
are now performed by pgsphere rather than a custom extension as before.
In some cases, in particular Gaia objects with radial velocities,
this may lead to different results at the microarcsec level.
We replaced the Fortran code that computed the apparent and
intermediate places with Python equivalents. We are confident
that the results are identical to the microarcsecond level.
For Hipparcos and Gaia APFS, this in particular means that
intermediate reductions to epoch J2000 no longer happen, which
should reduce the impact of rounding errors.
Computation of GAST, GMST, and ERA
APFS on Gaia DR2
APFS on Hipparcos
APFS Ephemeris for FK6 Stars
res/response.template
return ""
try:
pd = self.queryMeta["inputTable"].getParamDict()
return ctx.tag["ICRS position is α=%.7f, δ=%.7f"%(
float(pd["alpha"]), float(pd["delta"]))]
except:
return ""
This service is an extension of the
Apparent Places of Fundamental Stars (APFS) computing exact
geocentric positions in both the CIO and equinox systems to
stars from the Hipparcos catalogue.
apfs_hipquery
This service computes apparent and/or
intermediate places of the stars in the Hipparcos main catalogue.
Please note the warning on apparent places for multiple stars in
the service info.
The positions can
be given either in the CIO system (default) or the old equinox
system.
If you give a position or an object resolvable by Simbad, the
service will choose the nearest Hipparcos star for the ephemeris.
Apparent Places for Fundamental Stars
Computation of GAST, GMST, and ERA
APFS Ephemeris for Hipparcos Stars
# wants n:data="result"
if not self.queryMeta["inputTable"]:
# we're delivering an error
return ""
if self.queryMeta["inputTable"].getMeta("multiple"):
return ctx.tag["Warning: This star"
" is identified by Hipparcos as being a ",
T.strong["multiple star."],
" This means that proper motions given in the Hipparcos"
" catalogue are unreliable when applied to extended periods"
" of time. Thus, the places given below will be severely"
" wrong unless the orbital period of the object is sufficiently"
" long (i.e., hundreds of years)."]
return ""
This service is an extension of the
Apparent Places of Fundamental Stars (APFS) computing exact
geocentric positions in both the CIO and equinox systems to
stars from the Gaia DR2 result catalogue.
Apparent Places for Fundamental Stars
Computation of GAST, GMST, and ERA
`_, processed by the
Gaia `Data Processing and Analysis Consortium (DPAC)
`_. Funding for the
DPAC has been provided by national institutions, in particular the
institutions participating in the Gaia Multilateral Agreement.
]]>
apfs_gaiaquery
APFS Ephemeris for Gaia DR2 Stars
This service computes apparent and/or
intermediate places of the stars in the Gaia DR2 catalogue.
The positions can
be given either in the CIO system (default) or the old equinox
system.
Pass a position or an object resolvable by Simbad as well as a magnitude
range into the service. The service will then choose the
nearest Gaia star with sufficient astrometry matching your criteria
(only stars within 0.25 degrees are considered).
This service is an extension of the
Apparent Places of Fundamental Stars (APFS) computing exact
geocentric positions in both the CIO and equinox systems to
stars from the Gaia DR3 result catalogue.
Apparent Places for Fundamental Stars
Computation of GAST, GMST, and ERA
`_, processed by the
Gaia `Data Processing and Analysis Consortium (DPAC)
`_. Funding for the
DPAC has been provided by national institutions, in particular the
institutions participating in the Gaia Multilateral Agreement.
]]>
apfs_gaiaquery
APFS Ephemeris for Gaia DR3 Stars
This service computes apparent and/or
intermediate places of the stars in the Gaia DR3 catalogue.
The positions can
be given either in the CIO system (default) or the old equinox
system.
Pass a position or an object resolvable by Simbad as well as a magnitude
range into the service. The service will then choose the
nearest Gaia star with sufficient astrometry matching your criteria
(only stars within 0.25 degrees are considered).
self.assertHasStrings("Output format")
catquery/form
self.assertHasStrings("Required</li>")
catquery/form
self.assertHasStrings("known by simbad")
catquery/formApparent Places for star FK6 56")
self.assertHasStrings("+5 31 28.714")
]]>hipquery/form?_SET=cio&_SET=equApparent and Intermediate Places for star HIP 14576")
self.assertHasStrings("multiple star", "03 08 20.0148")
]]>catquery/formIntermediate Places for star FK6 907")
self.assertHasStrings("(Polaris)", "02 49 11.8798", "+89 19 10.165")
]]>
self.assertHTTPStatus(403)
self.assertValidatesXSD()
--",
'class="useservice"',
"give exact geocentric",
"Δ(AT)",
"End date of generated ephemeris",
"Hour of epoch (TT)",
"isodate",
"endDate")
]]>gdr2query/formIntermediate Places for star"
" Gaia DR2 1737540534405856896",
"2016-11-10", "12", "20 57 34.8099", "+7 45 31.205")
]]>gdr3query/formIntermediate Places for star"
" Gaia DR3 2062599636658625024",
"2021-12-10", "20 12 38.6742", "+41 05 47.717")
]]>