🚀 go-pugleaf

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

Daily conjunction ephemerides for the period of: Monday, 1996 Apr. 29 -
Sunday, 1996 May   5. 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 Apr. 29 >-------------------------
 (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
 0:15       76  9:54.9 +10:59 13.4 I 576  Gx  9:55.1 +11:02 15.0 ----- 2.7 168
 3:20       49 12:53.9 -10:21 13.4 N4790  Gx 12:54.9 -10:15 13.0   1.8 7.1 154
12:25      238 11:03.8 + 4:49 13.4 N3509  Gx 11:04.4 + 4:50 14.0   2.3 4.2  96
20:05      176 23:44.3 + 9:46 13.6 N7743  Gx 23:44.4 + 9:56 11.2   3.1 9.8 199

----------------------------< Tuesday, 1996 Apr. 30 >-------------------------
 (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
 5:55       49 12:53.2 -10:16 13.4 N4766  Gx 12:53.1 -10:23 15.0   1.6 7.1 333
10:35      584 23:08.9 + 0:48 13.0 I5287  Gx 23:09.4 + 0:45 15.0   1.1 3.5  29
12:35      433  7:27.2 +13:42 13.1 N2395  OC  7:27.1 +13:35  8.0  12.0 7.7 344
13:45      639 20:28.3 -18:26 13.5 I1321  Gx 20:28.2 -18:18 15.0   0.6 9.8 206
14:15      111  0:01.8 + 3:03 13.7 N7809  Gx  0:02.2 + 2:56 15.0 ----- 8.1  26
18:35      579  9:30.4 +26:44 13.7 I2486  Gx  9:30.3 +26:39 15.0   1.1 7.3 320

--------------------------< Wednesday, 1996 May   1 >-------------------------
 (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
 1:20      758  8:02.9 +23:19 13.9 N2512  Gx  8:03.1 +23:24 14.0   1.7 4.6 168
 4:55       98 13:40.9 -30:03 12.1 N5264  Gx 13:41.6 -29:55 13.0   1.8 9.0 173
17:30       49 12:52.4 -10:10 13.5 N4757  Gx 12:52.8 -10:19 15.0   1.8 9.6 333

---------------------------< Thursday, 1996 May   2 >-------------------------
 (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
 9:45      236 11:04.1 + 4:50 14.0 N3509  Gx 11:04.4 + 4:50 14.0   2.3 0.9 292
12:25      163 12:26.8 + 2:24 13.3 N4420  Gx 12:27.0 + 2:30 13.0   2.2 6.3 156
23:15      482 14:42.3 - 0:17 12.8 N5733  Gx 14:42.8 - 0:21 15.0   1.3 4.8 326

-----------------------------< Friday, 1996 May   3 >-------------------------
 (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
 4:45      337  4:18.9 +26:58 13.3 N1539  Gx  4:19.0 +26:51 15.0 ----- 7.5  10
10:30      270  7:09.1 +20:47 14.0 N2342  Gx  7:09.4 +20:38 13.0   1.6 9.8 353
18:00      423 15:16.0 -11:26 11.4 N5891  Gx 15:16.3 -11:31 14.0 ----- 4.4 358

---------------------------< Saturday, 1996 May   4 >-------------------------
 (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
 9:15      487  8:01.1 +24:30 13.6 I2218  Gx  8:01.6 +24:26 16.0 ----- 5.0 351
20:15      675  0:21.9 +10:31 13.1 N  95  Gx  0:22.2 +10:30 12.6   1.9 2.1  26
21:25       44 10:36.3 +12:51 10.7 N3299  Gx 10:36.4 +12:42 13.0   2.1 9.9 335

-----------------------------< Sunday, 1996 May   5 >-------------------------
 (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
 2:00       98 13:36.9 -29:56 12.2 N5236  Gx 13:37.0 -29:52  7.6  11.2 4.8 169
12:35      147 13:18.2 -10:09 13.1 N5066  Gx 13:18.4 -10:14 14.0 ----- 4.7 334
17:25       70 12:23.8 + 6:44 12.4 I3268  Gx 12:24.1 + 6:36 14.0   0.7 9.4  18
18:25       94 23:18.9 - 8:27 13.7 N7606  Gx 23:19.1 - 8:29 10.8   5.8 2.0  25

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  -
----------------------------------------------------------------------------
      44 960427  50.045  2.423 0.150 341.914 131.653  3.703  7.0 0.5 5.5E-02
      49 960427 156.678  3.081 0.236 110.661 286.364  3.185  7.8 0.2 1.1E-01
      70 960427 272.470  2.614 0.184 255.652  48.016 11.581  8.1 0.1 1.6E-01
      76 960427  47.925  3.414 0.164 256.049 204.717  2.117  7.9 0.2 1.1E-01
      94 960427 279.568  3.161 0.082  56.470   2.875  7.983  7.6 0.2 1.1E-01
      98 960427  47.457  2.687 0.188 156.995 354.328 15.575  8.8 0.2 3.8E-01
     111 960427 244.601  2.594 0.101 166.807 305.986  4.922  8.0 0.2 6.9E-02
     147 960427 202.187  3.134 0.037 117.545 249.362  1.932  8.3 0.2 2.2E-01
     163 960427  79.006  2.367 0.192 297.181 160.451  4.799  9.5 0.0 2.3E-01
     176 960427 330.237  3.191 0.162 183.690 200.925 22.524  7.9 0.2 1.5E-01
     236 960427 178.061  2.797 0.191 174.243 186.226  7.691  8.2 0.0 1.3E-01
     238 960427 140.645  2.905 0.091 208.874 184.263 12.404  8.2 0.2 2.0E-01
     270 960427 141.848  2.198 0.150  80.042 254.746  2.367  8.8 0.2 8.2E-02
     337 960427 347.097  2.383 0.139  98.750 355.618  7.857  8.7 0.2 3.6E-02
     423 960427 305.122  3.067 0.038 214.722  69.813 11.250  7.2 0.2 5.0E-02
     433 960427  25.294  1.458 0.223 178.559 304.438 10.831 11.2 0.5 8.6E-03
     482 960427 317.549  2.998 0.101  90.864 179.675 14.453  8.8 0.2 3.7E-01
     487 960427  90.865  2.670 0.088 281.054 115.141 10.236  8.1 0.2 1.7E-01
     579 960427 200.385  3.013 0.078 233.841  83.047 11.003  7.8 0.2 1.5E-01
     584 960427 332.477  2.374 0.234  84.448 282.505 10.717  8.7 0.2 1.4E-01
     639 960427 308.494  3.019 0.108  64.955 280.516  8.577  8.2 0.2 1.6E-01
     675 960427 316.276  2.769 0.203 152.320 263.492  9.802  7.9 0.2 8.7E-02
     758 960427  55.972  3.190 0.150 318.488 106.385  5.602  8.2 0.2 1.4E-01

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
Performa 630 computer (Version of 1996 Apr. 19th).

Please let me know if you observed a conjunction (or not).
You can reach me at a.doppler@uriela.in-berlin.de.

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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