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11:41 10.07.2018
18.03.2018

Catalogs of the topocentric positions of Uranus, Neptune and their satellites, obtained from photographic observations at the MAO NAS of Ukraine in 1963-1990.

Yizhakevich E.M., Andruk V.N., Pakuliak L.K.

The reprocessing of photographic series of observations of Uranus, Neptune and their satellites observed at the MAO NASU during the years 1961-1990 is finished. New methods of image processing were used. The observers participated in observations at different times are MAO employees: M.L.Divinskiy, A.S.Kotovych(A.S.Duma), A.N.Kur'yanova, I.V.Ledovskaya (I.V.Kulyk), R.F.Lysiakova, S.P.Major, G.V.Moroz,A.B.Onegina, E.M.Sereda, S.V.Shatokhina.

All the observations were done using 3 telescopes, two of them are DLFA (Double Long Focus Astrograph, D/f=0.4/5.5m) and DWA (Double Wide Angle Astrograph, D/f=0.4/2.0m) located on the territory of MAO NASU (Marsden's No.083). The third one is Z600 Karl Zeiss reflector(Zeiss-600, D=0.6,Cassegrain F=7.5m; Marsden's No.188) is located in Uzbekistan on the mount Maidanak. All observational material was scanned on the commercial scanner Epson Expression 10000XL ЕЕ in the grey color range 16-bits with the resolution of 1200 dpi [1,2].

The data processing was made using the software developed in the Astrometry Department of MAO NASU. It works in the LINUX-MIDAS-ROMAFOT environment[3-5].

As a result, we obtain two astrometric catalogs in the TYCHO2 reference system. The statistics of the reduction for Uranus and its U1,U2,U3,U4 satellites is given in Table 1. The same data on Neptune and Triton (N1) are shown in Table 2.

The internal accuracy of positions is ±0.09 ... ±0.23 arcsec. The photometric accuracy of B-magnitudes is in the range of ±0.27 - ± 0.37 mag. The comparison of calculates topocentric positions with their theoretical predictions was carried out on-line using IMCCE ephemerides (DE405 +TASS1.7) http://nsdb.imcce.fr/multisat/nssephme.htm. Observation with (O-C) exceeded ±2.0 arcsec were excluded.

 
         Table 1. Observational statistics for Uranus and its U1,U2,U3,U4 satellites.
===================================================================================================
---------------------------------------------------------------------------------------------------
           | Telescope/ |     |   Number of  |                          |        RMS of     | Ref.  
  Object   |   (period) | Bph | pos. pl. nig.|  O-Cal  Sd   O-Cdl.  Sd  | Bph   Alpha  Delta| stars 
------------------------|-----|----|---|-----|-------|----|-------|-----|-------------------|------
 U1,Ariel   Z600(1990)    12.4   2   2    2   -0.95   0.43   0.64   0.98  0.46  0.10   0.11     16    
---------------------------------------------------------------------------------------------------
 U2 Umbriel Z600(1990)    12.9   8   6    4   -0.01   0.63   0.27  0.46   0.54   0.11  0.14     16   
            DLFA(1963)    16.1   1   1    1   -0.22     -    0.12    -    0.21   0.04  0.04     97
---------------------------------------------------------------------------------------------------
 U3 Titania Z600(1990)    12.9  25  18    7    0.08   0.49   0.06  0.36   0.49   0.07  0.12     18
            DLFA(1963-64) 13.7   8   6    6   -0.25   0.38   0.19  0.52   0.28   0.05  0.04    109
---------------------------------------------------------------------------------------------------
 U4,Oberon  Z600(1990)    13.2  25  17    6    0.09   0.60   0.10  0.42   0.48   0.08  0.11     17
            DLFA(1963-64) 14.3   7   6    6    0.04   0.42   0.02  0.27   0.27   0.05  0.04    106
            DWA (1980)    12.5   1   1    1    0.04    -    -0.63   -     0.27   0.10  0.11   1260
---------------------------------------------------------------------------------------------------
as a result,by satellites:      77  24   13
--------------------------------------------
  URANUS    Z600(1990)    10.2  23  16    7    0.00    -     0.03   -     0.47   0.09  0.12     17
            DLFA(1963-64)  8.9  10   7    7    0.77   0.46  -0.18  0.50   0.28   0.06  0.07    100 
            DWA (1977-82)  6.2  35  16    9    0.13   0.63  -0.16  0.68   0.29   0.17  0.20    934
---------------------------------------------------------------------------------------------------
 as a result, by Uranus:   8.4  68  39  23
--------------------------------------------
TOTAL       (1963-1990)        145  39  23
---------------------------------------------------------------------------------------------------
===================================================================================================

       Table 2. Observational statistics for Neptune and Triton(N1).
===================================================================================================
---------------------------------------------------------------------------------------------------
           | Telescope/ |     |   Number of  |                          |        RMS of     | Ref.  
  Object   |  (period)  | Bph | pos. pl. nig.| O-Cal  Sd    O-C dl. Sd  | Bph   Alpha  Delta| stars
------------------------|-----|--------------|-------|----|--------|----|-------------------|------
 N1,Triton  Z600          11.9   9   8    5    0.34   0.57   0.38   0.46  0.65  0.10   0.08     17
             (1987,1990)
            DLFA(1963)    14.1   1   1    1    0.95    -    -0.01    -    0.22  0.04   0.04    104
---------------------------------------------------------------------------------------------------
 as a result, by telescopes:    10   9    6
--------------------------------------------
 NEPTUNE    Z600           9.1  16  13    7   -0.06   0.38   0.01  0.44   0.23   0.10  0.09     16
             (1987,1990) 
            DLFA           8.3   3   3    2    0.23   0.60   0.07  0.83   0.32   0.05  0.08     93
             (1963,1971)  
            DWA(1977-83)   8.5  33  14    7    0.20   0.68  -0.32  0.98   0.34   0.23  0.25    724
---------------------------------------------------------------------------------------------------
 as a result, by telescopes:    52  30   16
--------------------------------------------
  TOTAL      (1963-1990):       62  39   16
===================================================================================================               

.DAT FILEs' SUMMARY

=================================================================================
 File Summary:
---------------------------------------------------------------------------------
 FileName      Lrecl  Records   Explanations
---------------------------------------------------------------------------------
 Read_Me       110       .      This file
 DAT_URNn.dat  105      149     Catalogue of Topocentric positions of URANUS
                                and U1,U2,U3,U4 by names and telescopes.
 ADD_URNn.dat  105      149     AdditionalData to The Catalogue of
                                Topocentric positions of URANUS and U1-U4
 DAT_NEPT.dat   79       65     Catalogue of Topocentric positions of NEPTUNE
                                and TRITON (N1) by names and telescopes.
 ADD_NEPT.dat  105       65     Additional Data to The Catalogue of
                                Topocentric positions of NEPTUNE and N1.
==================================================================================

Data (12.0 Kb).File: DAT_URNn.dat.

Data (14.4 Kb).File: ADD_URNn.dat.

Data (5.3 Kb). File: DAT_NEPT.dat.

Data (5.9 Kb). File: ADD_NEPT.dat.

 
==================================================================================
 Byte-by-Byte Description of Files: DAT_URNn.dat and DAT_NEPT.dat
==================================================================================
Bytes  Format Units   Label     Explanations
----------------------------------------------------------------------------------
 1- 5  I5     year    year      Date of observation (year).
 6- 8  I3     month   mo        Date of observation (month).
 9-18  f10.6  day     day       Date of observation (day and decimal).
20-21  a2             obj       Name of Object.           
22-34                 Alpha     Right ascension (ICRF/J2000.0):
22-24  I3     hours   hh         -right ascension (hours)
25-27  I3     minute  mn         -right ascension (minutes)
28-34  f7.3   second  ss         -right ascension (seconds,decimal).
35-48                 Declin    Declination (ICRF/J2000.0):
35-38  I4     degree  deg        -declination (degrees)
39-41  I3     arcmin  mi         -declination (arcminutes)
42-48  f7.3   arcsec  sec        -declination (arcseconds).
49-55  f7.2   arcsec  O-Cal     Residual (O-C)alpha (arcsecond).
56-61  f6.2   arcsec  O-Cdl     Residual (O-C)delta (arcsecond).
62-67  I6     number  Pl        Plate number according to log-book.
68-68  a1             p         Tube position relative to column:
                                 -"e"-east, -"w"-west.        
69-70  a2             Tu        Designation of tube: I or II.  
71-74  I4             Exp       Exposure duration .
75-75  a1             s/m        seconds or minutes.
77-78  a2             Telec.    Telescope: DL=DLFA, DW=DWA,
                                 DZ=DAZ,Z6=Z600.
----------------------------------------------------------------------------------



==================================================================================
Byte-by-byte Description of file: ADD_CATL.dat
==================================================================================
 Bytes Format Units   Label     Explanations
----------------------------------------------------------------------------------
 1- 5   I5    year    year      Date of observation (year).
 6- 8   I3    month   mo        Date of observation (month).
 9-18   f10.6 day     day       Date of observation (day and decimal).
20-21   a2            obj       Name of Object.           

22-26   I5            Npl       Plate number according to log-book.
27-27   a1            p         Tube position relative to column:
                                  -"e"-east,-"w"-west.
28-29   a2            Tu        Designation of tube: I or II.
31-32   a2            Tel       Telescope: DL=DLFA, DW=DWA,
                                   DZ=DAZ,Z6=Z600.
33-37   f5.1  mag     Bph       Photographic magnitude.
38-43   f6.2          rmsB      R.M.S.(Photographic magnitude).
44-50   f7.3  arcsec  rmsAl     R.M.S.(Right ascension,J2000.0).
51-57   f7.3  arcsec  rmsDl     R.M.S.(Declination,J2000.0).
58-62   I5            Nz        Number of reference stars (TYCHO2).
63-75   a13           emuls     Type of Emulsion.
76-105  a30           obs       Observer's name.

-----------------------------------------------------------------------------------
===================================================================================
 Note: The DLFA observations basically were made on the first tube "І"
        with the tube position to the west from the column - "W", the DWA ones - with
        the tube position to the east from the column - "Е". The absence of 
        the informations means the standard conditions.
===================================================================================

References

1. Andruk V.M.,Ivanov G.A.,Pogorel'tsev V.T.,Yatsenko A.I. On application of a scanner for determination of coordinates and photometristics of stars from The FON Program plates.// Kinemat. and Phys. Celest. Bodies, 2005,Vol.21, N5, p.396-400.

2.Protsyuk Yu.I., Kovylianska O.E., Protsyuk S.V., Andruk V.M. Results of processing of astronegatives with commercial scanner // Odessa Astron. Publ., 2014, Vol.27, p.63-64. <2014OAP....27...63P>.

3.Andruk V.M.,Pakuliak L.K., Golovnya V.V.,Ivanov G.O., Yizhakevych O.M., Protsyuk Yu.I., Shatokhina S.V. Catalogue of star positions and B-magnitudes in 60th declinationzone bassed on UkrVO Joint Digital Archive.//2015, arXiv.org>astro-ph>arXiv.1512.05535.

4.Pakuliak L., Andruk V., Shatokhina S., Golovnya V., Yizhakevych O.,Kulyk I. First results of MAO NASU SS bodies photographic archiv digitizing. //IMCCE.International Workshop NAROO-GAIA "A new reduction of old observations the Gaia era". Paris Observatory, June 2012. p.161-165..

5.Yizhakevych, O.; Andruk, V.;Pakuliak, L.; Lukianchuk, V. Photographic observations of Major planets and Their moons in MAO NAS of Ukraine during 1961-1990..// Bull.of T.Shevchenko Nat.Univ.of Kyiv., vol.1(55), p.9-13.

6.Yizhakevych O.M.,Andruk V.M.,Pakuliak L.K. Photographic observations of Major planets and Their moons during 1961- 1990 at the MAO NAS of Ukraine.//Odessa Astron. Publ., 2016, Vol.29, p.155-159. (http://gamow.odessa.ua/publications).<2016OAP....29..155Y>

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L.Pakuliak. Questions, remarks and propositions are welcome.