VizieR

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VizieR

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IX/25/ipcihut Einstein Observatory IPC Parameters (HEAO-2, 1978-1981)
Component Huts for IPC Sequences (13265 rows)
  recno=9294
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ColumnValue  Explain   (UCD)
_RAJ200022 57 27.86 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+20 46 03.6 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195022 55 01.00 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+20 30 00.0 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon090.06143 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-34.72801 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
9294recno 9294  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

IPCseq 7961  IPC Sequence Number (Note 1)   (meta.id;meta.main)
fieldno 2  IPC hut number relative to field (Note 1)   (meta.id)
MinFno208513276  Minor frame number (Note 2)   (obs.field)
MajFno1629009  Absolute hut number (minor frame / 128) (Note 2)   (obs.field)
RAB195022 55 01 "h:m:s" (i) Right Ascension (B1950) (pos.eq.ra;meta.main)
DEB1950+20 30 00 "d:m:s" (i) Declination (B1950) (pos.eq.dec;meta.main)
hutroll 2.071 rad Hut - nominal roll angle (Note 3)   (instr.param)
aspyoff 1.181  Aspect Y offset in pixels (Note 4)   (instr.saturation)
aspzoff 0.129  Aspect Z offset in pixels (Note 4)   (instr.saturation)
asprot-1.5234e-03 rad Aspect rotation (Note 4)   (instr.saturation)
livetime3054.640 s Livetime (Note 5)   (time.duration;obs.exposure)
avgbal13.66  Time-averaged BAL (Note 6)   (phot.flux.density;em.IR.4-8um)
ustartim 8.2830800e+09 us Start time (Note 7)   (time.epoch)
astartday1089  Absolute start day (offset from 1978.0) (Note 7)   (time.epoch)
start1980-12-24 "Y:M:D" Start year (Note 8)   (time.start)
starttime 8283080 ms Start time (Note 8)   (time.epoch)
stop1980-12-24 "Y:M:D" Stop year (Note 8)   (time.end)
stoptime18113480 ms Stop time (Note 8)   (time.epoch)

_RA.icrs22 57 28 "h:m:s" (i) Right ascension (ICRS) (computed by VizieR, not part of the original data) (pos.eq.ra)
_DE.icrs+20 46 04 "d:m:s" (i) Declination (ICRS) (computed by VizieR, not part of the original data) (pos.eq.dec)
  
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