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J/AN/323/484   Accurate coordinates of Planetary Nebulae (Kohoutek+, 2002)
Accurate coordinates of Planetary Nebulae.
    Kohoutek L., Kuehl D.
   <Astron. Nachrichten, 323, 484 (2002)>
   =2002AN....323..484K
ADC_Keywords: Planetary nebulae ; Positional data

Keywords: planetary nebulae: general; stars: evolution


Description:
    Accurate optical coordinates of 734 PNe, measured on the charts of the
    Digitized Palomar Sky Survey (DSS-2), are presented. As a result of
    the discussion about the external accuracy the constants -0.8" in RA
    and +0.8" in DEC should be added to the coordinates measured by us.
    They were used but rounded off already in CGPN(2000).

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        68      761   Accurate coordinates
table3.dat        76       41   Central star candidates
remarks.dat      111       58   Remarks (concerns PNe and central stars)


See also:
     IV/24 : Catalogue of Galactic Planetary Nebulae (Kohoutek, 2001)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

       1  A1    ---     n_PK      [*M] Possible (*) or Misclassified (M) PN.
   2- 10  A9    ---     PK        PK Designation
  12- 32  A21   ---     Name      Other name of the PN
  33- 35  A3    ---     n_Name    [old ] old for old coordinates
  37- 38  I2    h       RAh       Right Ascension J1950 (hours)
  40- 41  I2    min     RAm       Right Ascension J1950 (minutes)
  43- 47  F5.2  s       RAs       Right Ascension J1950 (seconds)
      49  A1    ---     DE-       Declination J1950 (sign)
  50- 51  I2    deg     DEd       Declination J1950 (degrees)
  53- 54  I2    arcmin  DEm       Declination J1950 (minutes)
  56- 59  F4.1  arcsec  DEs       Declination J1950 (seconds)
      62  I1    ---     C         [1,5] Positional accuracy category (1)
      65  A1    ---     Cs        [s] s: suspected central star measured
                                         (see Table 3)
  67- 68  I2    ---     Rem       [1/39]? Remarks, in remarks.dat file

Note (1): this quality (1=best) indicates the accuracy of the position:
      1 = 1meas. σ=0.12arcsec
      2 = 4meas. σ=0.14arcsec
      3 = 4-6meas. σ=0.18arcsec
      4 = 4meas. σ=0.49arcsec
      5 = σ up to 12.8arcsec


Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

       1  A1    ---     n_PK      [*M] Possible (*) or Misclassified (M) PN.
   2- 10  A9    ---     PK        PK Designation
  12- 21  A10   ---     PNG       Designation in PNG (V/84) catalog
  24- 33  A10   ---     Name      Other name of the PN
  35- 36  I2    h       RAh       Right Ascension J2000 (hours)
  38- 39  I2    min     RAm       Right Ascension J2000 (minutes)
  41- 45  F5.2  s       RAs       Right Ascension J2000 (seconds)
      47  A1    ---     DE-       Declination J2000 (sign)
  48- 49  I2    deg     DEd       Declination J2000 (degrees)
  51- 52  I2    arcmin  DEm       Declination J2000 (minutes)
  54- 57  F4.1  arcsec  DEs       Declination J2000 (seconds)
  60- 65  F6.2  deg     GLon      Galactic longitude
  67- 72  F6.2  deg     GLat      Galactic latitude
  75- 76  I2    ---     Rem       [40,50]? Remarks, in remarks.dat file


Byte-by-byte Description of file: remarks.dat

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     Rem       Remark number
       5  A1    ---     ---       [(]
   6- 14  A9    ---     PK        PK number
      15  A1    ---     ---       [)] Uncertainty flag on PK number
  17-111  A95   ---     Text      Text of the remark


History:
  * 12-Sep-2002: Original version
  * 26-Apr-2009: Reformatted at CDS to isolate the * or M indication
           of possible/miclassified PN (was originally mixed with the
           PK name). Added table3.

Acknowledgements:
    Lubos Kohoutek [lkohoutek(ar)hs.uni-hamburg.de]
(End)              L. Kohoutek, D. Kuehl [Hamburg Observatory]       12-Sep-2002