NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Algorithm for star ephemerides?
From: Andrés Ruiz
Date: 2001 Apr 20, 6:45 AM
From: Andrés Ruiz
Date: 2001 Apr 20, 6:45 AM
Here is an extract of the FK5 catalog available at
ftp://adc.gsfc.nasa.gov/pub/adc/archives/catalogs/1/1149A/
FK5 Number
RA
RA
RA
PM RA
Dec
Dec
Dec
PM Dec
h
m
s
s/JC
G
M
S
1
,
0
,
8
,
23.265
,
1.039
,
29
,
5
,
25.58
,
-16.33
2
,
0
,
9
,
10.695
,
6.827
,
59
,
8
,
59.18
,
-18.09
3
,
0
,
9
,
24.659
,
1.186
,
-45
,
44
,
50.79
,
-18.11
4
,
0
,
10
,
19.257
,
0.074
,
46
,
4
,
20.21
,
0.03
5
,
0
,
11
,
34.437
,
0.079
,
-27
,
47
,
59.12
,
1.65
6
,
0
,
11
,
44.014
,
1.412
,
-35
,
7
,
59.17
,
11.86
7
,
0
,
13
,
14.154
,
0.019
,
15
,
11
,
0.8
,
-1.2
9
,
0
,
19
,
25.674
,
-0.093
,
-8
,
49
,
26.14
,
-3.61
10
,
0
,
20
,
4.251
,
26.778
,
-64
,
52
,
29.25
,
116.39
11
,
0
,
25
,
45.056
,
66.919
,
-77
,
15
,
15.4
,
32.37
...
and the numbers for Navigational Stars are:
navStars[numNavigationalStars] =
{
"Acamar" , 106 ,
"Achernar" , 54 ,
"Acrux" , 462 ,
"Adhara" , 268 ,
"Al Na'ir" , 829 ,
"Aldebaran" , 168 ,
"Alioth" , 483 ,
"Alkaid" , 509 ,
"Alnilam" , 210 ,
"Alphard" , 354 ,
"Alphecca" , 578 ,
"Alpheratz" , 1 ,
"Altair" , 745 ,
"Ankaa" , 12 ,
"Antares" , 616 ,
"Arcturus" , 526 ,
"Atria" , 625 ,
"Avior" , 315 ,
"Bellatrix" , 201 ,
"Betelgeuse" , 224 ,
"Canopus" , 245 ,
"Capella" , 193 ,
"Deneb" , 777 ,
"Denebola" , 444 ,
"Diphda" , 22 ,
"Dubhe" , 417 ,
"Elnath" , 202 ,
"Eltanin" , 676 ,
"Enif" , 815 ,
"Fomalhaut" , 867 ,
"Gacrux" , 468 ,
"Gienah" , 457 ,
"Hadar" , 518 ,
"Hamal" , 74 ,
"Kaus Aust." , 689 ,
"Kochab" , 550 ,
"Markab" , 871 ,
"Menkar" , 107 ,
"Menkent" , 520 ,
"Miaplacidus" , 348 ,
"Mirfak" , 120 ,
"Nunki" , 706 ,
"Peacock" , 764 ,
"Polaris" , 907 ,
"Pollux" , 295 ,
"Procyon" , 291 ,
"Rasalhague" , 656 ,
"Regulus" , 380 ,
"Rigel" , 194 ,
"Rigil Kent." , 538 ,
"Sabik" , -1 ,
"Schedar" , 21 ,
"Shaula" , 652 ,
"Sirius" , 257 ,
"Spica" , 498 ,
"Suhail" , 345 ,
"Vega" , 699 ,
"Zuben'ubi" , 548
};
>From Epoch J2000, you must add the Proper Motion, Nutation, and Aberration of
the star to calculate the RA and Dec of the star, as Astronomical Algorithms.
by Jean Meeus, 2 Ed edition (December 1998). ISBN: 0943396638 said.
Andr�s Ruiz
http://www.geocities.com/andresruizgonzalez/ Marine Navigation
e-mail: aruiz@orona.es
