🚀 go-pugleaf

Author : a.doppler@uriela.in-berlin.de (Andreas Doppler)

Daily conjunction ephemerides for the period of: Monday, 1996 Jun. 17 -
Sunday, 1996 Jun. 23. The conjunctions are sorted by time (UT). All known
asteroids of the file astorb.dat by E. Bowell and objects of the NGC 2000.0
are included in the list which meets the following criteria: The minimum
elongation to the sun has to exceed 30 degrees, the maximum elongation to
the
NGC/IC Object is 10 arcmin and the limiting magnitude of the asteroid is
brighter or equal than 14.0 mag. The Ephemerides were calculated with a
step
of 5 min. Coordinates are for J2000.0 and FK5. Every fifth issue detailed
explanations are given at the end of the ephemerides.

-----------------------------< Monday, 1996 Jun. 17
>-------------------------
 (UT) Asteroid R.A.(2000)Decl Magn NGCICType R.A.(2000)Decl Magn  Size Dis
Pos
 h  m NameNum.  h   m    o  ' Step ID    OBJ  h   m    o  ' Step    '   '  
 o
14:50      387  3:31.1 + 4:18 13.2 N1349  Gx  3:31.4 + 4:22 15.0 ----- 3.3
189

----------------------------< Tuesday, 1996 Jun. 18
>-------------------------
 (UT) Asteroid R.A.(2000)Decl Magn NGCICType R.A.(2000)Decl Magn  Size Dis
Pos
 h  m NameNum.  h   m    o  ' Step ID    OBJ  h   m    o  ' Step    '   '  
 o
 5:15      511  2:39.1 + 1:28 12.0 I1827  Gx  2:39.7 + 1:33 14.0   1.2 5.1
193
19:00       44 11:21.9 + 7:45 11.4 I2758  Gx 11:22.0 + 7:49 15.0 ----- 3.6
155
19:00       95  1:54.3 +20:33 13.4 N 722  Gx  1:54.8 +20:41 14.0 ----- 8.1
201
19:25      511  2:39.9 + 1:30 12.0 N1038  Gx  2:40.1 + 1:30 14.0 ----- 1.0 
13
20:25      372  9:55.2 + 4:21 13.0 N3055  Gx  9:55.3 + 4:16 12.1   2.2 6.7
332

--------------------------< Wednesday, 1996 Jun. 19
>-------------------------
 (UT) Asteroid R.A.(2000)Decl Magn NGCICType R.A.(2000)Decl Magn  Size Dis
Pos
 h  m NameNum.  h   m    o  ' Step ID    OBJ  h   m    o  ' Step    '   '  
 o
 5:20       29  8:28.2 +22:07 11.1 I2382  Gx  8:28.7 +22:04 15.0   0.4 4.0
343

---------------------------< Thursday, 1996 Jun. 20
>-------------------------
 (UT) Asteroid R.A.(2000)Decl Magn NGCICType R.A.(2000)Decl Magn  Size Dis
Pos
 h  m NameNum.  h   m    o  ' Step ID    OBJ  h   m    o  ' Step    '   '  
 o
10:15      694 22:02.9 +12:37 12.4 N7194  Gx 22:03.5 +12:37 14.0 ----- 1.0 
56
11:55      694 22:03.1 +12:38 12.4 N7195  Gx 22:03.4 +12:39 15.0 ----- 0.3
228
12:50      335 12:02.8 + 4:45 13.6 I 756  Gx 12:03.0 + 4:50 15.0   2.1 5.2
154
15:45      751  1:28.9 - 6:52 13.5 I 127  Gx  1:29.8 - 6:59 ----   2.1 7.2 
14

-----------------------------< Friday, 1996 Jun. 21
>-------------------------
 (UT) Asteroid R.A.(2000)Decl Magn NGCICType R.A.(2000)Decl Magn  Size Dis
Pos
 h  m NameNum.  h   m    o  ' Step ID    OBJ  h   m    o  ' Step    '   '  
 o
 3:15      213  1:09.9 + 1:48 13.9 I  83  Gx  1:10.5 + 1:41 15.0   0.5 8.3 
15
 3:20      704  2:16.2 +28:29 11.7 N 865  Gx  2:16.1 +28:36 14.0 ----- 7.3
206
 4:50       51 10:09.1 +11:00 12.3 I 595  Gx 10:09.7 +11:00 15.0 ----- 0.6
346
 5:25      455  0:27.9 -11:31 12.7 I  19  Gx  0:28.7 -11:38 15.0   0.6 6.2 
11
 5:55      455  0:28.0 -11:31 12.7 I  18  Gx  0:28.6 -11:34 15.0   0.6 2.3 
12
16:50      287 10:44.2 +14:11 13.2 N3357  Gx 10:44.4 +14:05 15.0   1.9 7.0
338
20:05      751  1:30.9 - 6:44 13.5 N 584  Gx  1:31.3 - 6:52 10.4   3.8 7.2 
14
20:05      751  1:30.9 - 6:44 13.5 N 586  Gx  1:31.6 - 6:54 13.2   1.6 9.3 
14

---------------------------< Saturday, 1996 Jun. 22
>-------------------------
 (UT) Asteroid R.A.(2000)Decl Magn NGCICType R.A.(2000)Decl Magn  Size Dis
Pos
 h  m NameNum.  h   m    o  ' Step ID    OBJ  h   m    o  ' Step    '   '  
 o
 3:30      702 23:09.0 +12:03 13.0 N7495  Gx 23:09.0 +12:04 15.0   2.1 0.7
247
13:25      140  1:39.0 + 7:16 13.3 N 638  Gx  1:39.6 + 7:14 14.0 ----- 2.6 
18

-----------------------------< Sunday, 1996 Jun. 23
>-------------------------
 (UT) Asteroid R.A.(2000)Decl Magn NGCICType R.A.(2000)Decl Magn  Size Dis
Pos
 h  m NameNum.  h   m    o  ' Step ID    OBJ  h   m    o  ' Step    '   '  
 o
 3:40       57 10:33.1 + 2:49 13.3 I 621  Gx 10:33.3 + 2:40 15.0 ----- 9.4
351
14:45      287 10:46.9 +13:56 13.2 N3377  Gx 10:47.7 +13:59 10.2   4.4 3.1
159
20:05      185 11:42.1 +16:30 13.5 N3828  Gx 11:42.9 +16:30 15.0 ----- 0.4
336

Used orbital elements (2000.0) from the file ASTORB.DAT by E. Bowell
MP       JDate  M       Halfa. Eccen Perihel Node    Inclin H     G  CEU
NameNum. YeMoDa Degrees   A.U. e     Degrees Degrees Degree Magn  -
----------------------------------------------------------------------------
      29 960427  56.620  2.555 0.073  63.420 356.593  6.107  5.8 0.2
3.2E-02
      44 960427  50.045  2.423 0.150 341.914 131.653  3.703  7.0 0.5
4.8E-02
      51 960427 341.211  2.366 0.066   1.936 176.251  9.958  7.3 0.1
2.4E-02
      57 960427  97.521  3.148 0.119 215.263 199.430 15.211  7.0 0.2
6.4E-02
      95 960427 333.331  3.070 0.144 154.067 243.477 12.985  7.8 0.2
1.6E-01
     140 960427  27.372  2.731 0.217 195.537 107.385  3.190  8.3 0.2
8.8E-02
     185 960427 158.193  2.737 0.129 223.854 154.097 23.261  7.6 0.2
6.0E-02
     213 960427  43.354  2.751 0.148 161.740 122.261  6.806  8.6 0.2
1.4E-01
     287 960427 264.627  2.353 0.023 121.453 142.529 10.021  8.3 0.2
7.0E-02
     335 960427 282.380  2.473 0.176 139.407 148.599  5.088  9.0 0.2
1.6E-01
     372 960427  46.860  3.144 0.263 116.505 327.524 23.866  7.2 0.2
2.0E-01
     387 960427  76.742  2.738 0.238 156.005 128.535 18.075  7.4 0.2
8.5E-02
     455 960427 337.082  2.658 0.291 272.014  76.787 12.035  8.9 0.2
1.6E-01
     511 960427 303.289  3.170 0.182 339.008 107.797 15.940  6.2 0.2
3.9E-02
     694 960427 330.695  2.672 0.322 110.230 230.810 15.842  9.2 0.2
1.5E-01
     702 960427  35.984  3.192 0.026 357.582 290.181 20.603  7.2 0.2
1.4E-01
     704 960427 355.959  3.063 0.146  94.115 280.700 17.326  5.9 0.0
2.5E-02
     751 960427 324.133  2.551 0.152 302.566  78.985 15.615  8.7 0.1
1.9E-01

Images of some NGC or IC Objects :
----------------------------------
NGC 3055 ftp://seds.lpl.arizona.edu/pub/images/deepspace/gco/ngc3055.gif

Source of the images :
----------------------
Students for the Exploration and Development of Space 
  http://www.seds.org/messier/objects.html

Explanations of the columns in the orbital elements:

MP      (NameNum.) The asteroids number or designation.
JDate   (YeMoDa)   The Julian Date yymmdd for the
M       (Degrees)  mean anomaly M in degrees.
Halfa.  (A.U.)     The great half axis a in astronomical units.
Eccen   (e)        The eccentricity of the orbit
Perihel (Degrees)
Node    (Degrees)
Inclin. (Degrees)  The three orbit angles in degrees.
H       (Magn)     The magnitude of the object in 1 A.U. from the sun and
                   the earth.
G       (-)        The factor in the calculation of the objects brightness,
                   which is too complicate to list here (see textbooks).
CEU                Absolute value of the current ephemeris uncertainty
                   (CEU) in arcsec.

The Source of the elements is the file ASTORB.DAT
published by E. Bowell. The orbital element list is only for an overview,
which orbit I used. For all objects the accuracy of the published original
elements are some digits better than given here.

Explanations of the columns in the ephemerides:

UT                Universal Time of the conjunctions given in steps of
5min.
MinorPl           Number or designation of the asteroid.
R.A.(2000)Decl    The asteroid�s right ascension in hours and time minutes
and
                  the declination in degrees and arc minutes for J2000.0.
Magn              The magnitude of the asteroid in magnitude steps.
NGCICType         N or I for a NGC or IC Object followed by the number as
                  appeared in the catalogue.
                  Gx  : Galaxy
                  OC  : Open star cluster
                  Gb  : Globular star cluster, usually in the Milky Way
Galaxy
                  Nb  : Bright emission or reflection nebula
                  Pl  : Planetary nebula
                  C+N : Cluster associated with nebulosity
                  Ast : Asterism or group of a few stars
                  Kt  : Knot or nebulous region in an external galaxy
                  *** : Triple star
                  D*  : Double star
                  *   : Single star
                  ?   : Uncertain type or may not exist
                  x   : Unidentified at the place given, or type unknown
                  -   : Object called nonexistent in the RNGC
                  PD  : Photographic plate defect
R.A.(2000)Decl    The NGC/IC Object�s right ascension in hours and time
minutes
                  and the declination in degrees and arc minutes for
J2000.0.
Magn              The magnitude of the NGC/IC Object in magnitude steps.
Size              The size of the NGC/IC Object in arc minutes.
Dist              The distance of the asteroid to the NGC/IC Object in arc
                  minutes.
Pos               The asteroid's position angle to the NGC/IC Object (from
                  north over east, south and west back to north, 0..360
                  degrees).

The ephemerides should promote the observing of conjunctions.

The ephemerides were computed with a program by Andreas Doppler with an
Apple
Quadra 630/PPC computer (Version of 1996 Jun. 7th).

Please let me know if you observed a conjunction (or not).

Because of the reason that software and/or datas may be incorrect, I cannot
guarantee the correctness of the ephemerides above.

Thanks to Arturo R. Montesinos (aramirez@servcoiae.recol.es) for bug
reports.
Thanks to Ted Bowell for his permission to use his compilation of orbital
elements

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