proposed: Orientation Format

Walter Nissen (dk058@cleveland.Freenet.Edu)
Tue, 13 Aug 1996 21:00:32 -0400

I have made some important changes in the details of the format which I 
propose for reporting orientation (of tethers).  As noted by Ted Molczan, 
a window of morning visibility of TiPS is just opening for mid-northern 
observers.  This is the updated version (ver 0.1), submitted for your 
comments and your use until improved. 
 
I suggest this convention.  Assume that the observer is able to 
distinguish Ralph from Norton.  If the orientation is, e.g.: 
 
n         n                                R                            n 
|           \                              |                           / 
|            \          n--------R         |         R---------n      / 
|              \                           |                         / 
|                \                         |                        / 
R                 R                        n                       R 
 
then the vertex angle is: 
 
0           45            90             180             270         330 
 
and the observer should report a vertex angle between 0 and 359.99 
degrees.  I.e., the vertex angle (see appendix) of Norton with respect to 
Ralph, i.e, the angle measured counter-clockwise from directly above. 
 
If the observer cannot distinguish Ralph from Norton, then the angle reported 
should be a vertex angle, determined in the same way, between 0 and 179.99 
degrees. 
 
Modelled after PPAS, I suggest this format: 
Walter I. Nissen, Jr., CDP, dk058@cleveland.freenet.edu, 55 Barrett RD #808, 
Berea, OH 44017-1657, USA, 216-243-4980, -81d 51.823', 41d 22.413', 256m, 7x35 
yy-lllpp yy-mm-dd hh:mm:ss.ss NNN d->d al v.a UML m1  sp RN Comments 
96- 29 ? 96-07-11  4:43       WN  N->S 50 140?LML 6      xx steady angle 
Walter I. Nissen, Jr., CDP, dk058@cleveland.freenet.edu, 55 Barrett RD #808, 
Berea, OH 44017-1657, USA, 216-243-4980, -81d 51.823', 41d 22.413', 256m, 11x80 
yy-lllpp yy-mm-dd hh:mm:ss.ss NNN d->d al v.a UML m1  sp RN Comments 
96- 29 ? 96-07-12  3:35       WN  N->S 65  45?LML        xx TiPS 
96- 29 ? 96-07-12  3:38       WN  N->S 40  45?LML        xx TiPS 
96- 29 ? 96-07-16  2:39:30    WN  N->S 40   0  V  5      xx TiPS 
96- 29 ? 96-07-16  2:40:30    WN  N->S 30   0  V         xx TiPS 
96- 29 ? 96-07-21  2:18:52.08 WN  N->S 57 150 LML        xx TiPS 
96- 29 ? 96-07-21  2:24:39.53 WN  N->S 14 175 LML        xx TiPS 
96- 29 ? 96-07-23  1:50:00    WN  N->S 58             sp?   TiPS 
96- 29 ? 96-07-23  1:51:30    WN  N->S 46  10 UML        xx TiPS 
96- 29 ? 96-07-23  1:53:30    WN  N->S 28   5 UML        xx TiPS 
 
The pp is the piece number in the COSPAR ID (apparently no agreement for 
 TiPS yet) 
UTC date and time are given (give local time and zone also if your clocks are 
 not set to UTC, or if you have any doubt about the conversion) 
NNN is the observer's initials (from PPAS) 
al is the altitude, if the al's you provide don't suggest the maximum 
  you are encouraged to provide a record to give the max altitude 
d->d is the direction of motion 
v.a is the vertex angle (norton above = 0, norton left = 90, etc.) 
UML is Upper Mass Leading, Lower Mass Leading or Vertical 
m1 is total visual magnitude 
sp is blank if no sparkles are observed, sp if 1-5 are observed, 
  SP if more than 5 are observed 
RN is blank if the orientation could not be observed, xx if Ralph could not 
be distinguished from Norton, and RN if it could. 
mag is image magnification 
apur is aperature in mm 
Comments are encouraged to run into paragraphs if you have things to say 
 
 
Some possible improvements to the format: 
 
azimuth could be given 
 
left->right could be given 
 
sp could be count of sparkles 
 
length could be given in minutes of arc 
 
RN could be a single column 
 
vvv.vv format could be used for vertex angle (i.e., fractional degrees of 
angle) 
 
 
The dashes(-) in the date and the colons(:) in the time are an unnecessary 
affectation. 
 
 
Cheers. 
 
Walter Nissen                   dk058@cleveland.freenet.edu

---

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