Vixen Sphinx SXP - Manual (Page 47)

Chapter 4 AUTOMATIC GOTO SLEWING
This allows slewing to comets. The orbital elements of the comet McNaught (2009 R1) are shown as an example.
Entering the Orbital Elements of the Comet
STAR BOOK TEN allows you to enter orbital elements of up to 10 comets for Go-To slewing. You can access the orbital elements of
comets from commercially available astronomy magazines, internet websites and so forth. Use the most recent ones to prevent inaccurate
slewing to the comet and to diminish tracking errors.
Note : Use the or zoom key to shift the cursor in the vertical direction while you enter alphabets and numbers.
(Here, the • direction keys are not allocated for moving the cursor.)
北
Call up “Object Menu” and choose “Comet” with the or direction key. Press the (or )key to access the entry dialog box.
With the or direction key, move the courser to an available entry space where no comet names are set. (The third line is chosen here.)
Press the key to display the “New Object” dialog box and move the cursor to an available entry space with the or direction key.
Enter the name of the comet and its orbital elements by alphabet and number with the • direction key.
Comet
1
Press the key to complete the entry. Then, press the key again to leave this
menu.
If a wrong number is entered, the item for the entry will be highlighted in red to alert you.
4
2
3
1 1 2 2 3 3
4 4
When figuring the decimal fraction for orbital elements, the resulting
number must have three spaces before the decimal and the number
after the decimal is determined by the number of spaces available.
Round off at that point.
Code Name
Time of Pericenter Passage (T)
Argument of Pericenter (ω)
Longitude of the Ascending Node (Ω)
Inclination (i )
Minimum Distance from Pericenter (q)
Eccentricity (e) 2009 R1
2010 / 6 / 2.67841 TT
130.70095
322.62188
77.03226
0.4050263 AU
1.0003431
EPOCH = June 13.0, 2010
The orbital elements of the comet McNaught (2009 R1)
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