|
Author
|
Topic: ephemerides back to 1600
|
bjorkstrand
Knowflake Posts: 159
From: Canada
Registered: Mar 2013
|
posted October 03, 2017 12:40 PM
  
if u want to make an ephemeride for an object that doesn't have a "number" yet, here's how u do it
go to
https://ssd.jpl.nasa.gov/sbdb.cgi?under "search" u type in the object name for example"2015 RR245"
then u will see the word "ephemeris" at the top left of the page, hit it.
that will take u to the "horizons" page,
there u change the table setting to "31" to give u the ecliptic number which will be in "360" degree notation,,270=capricorn
and u obviously change the time settings for what period u want.
u can only go back to 1600 ad
if u want to go back further, check out http://expreso.co.cr/centaurs/
for "riyal" software, i have it and use it often
good luck
IP: Logged |
bjorkstrand
Knowflake Posts: 159
From: Canada
Registered: Mar 2013
|
posted October 03, 2017 01:33 PM
also positions for comets can be done
a new comet coming up is "C/2017 O1"
IP: Logged |
mirage29
Knowflake Posts: 8443
From: us
Registered: May 2012
|
posted October 03, 2017 11:19 PM
How cool!  Thanks very much for the lesson, and the interesting links.  - http://ssd.jpl.nasa.gov/sbdb.cgi More info on comets, and a calculator...
- www.markandrewholmes.com/comets.html
http://ned.ipac.caltech.edu/forms/calculator.html ^ Had the Holmes page ref in a paper I stashed inside a used book I have on comets.
I am not familiar with the NED IPAC. Leaving url here for all. Books Richard Flaste, et al (1985).
The New York Times guide to the return of Halley's Comet.
- http://www.amazon.com/Times-Guide-Return-Halleys-Comet/dp/0812963474 Have a note scribbled to also see book--
Benson Bobrick (2005).
The Fated Sky: Astrology in History.
p. 103
Index Edmond Halley pp 230, 231, 237, 303
comet p. 100 -http://www.goodreads.com/book/show/319949.The_Fated_Sky
- http://www.amazon.com/Fated-Sky-Astrology-History/dp/0743268954 Linking your other recent thread with links to 'loads of objects'.
- http://www.linda-goodman.com/ubb/Forum28/HTML/004575.html IP: Logged |
bjorkstrand
Knowflake Posts: 159
From: Canada
Registered: Mar 2013
|
posted October 03, 2017 11:46 PM
about once a week i check out
http://www.ast.cam.ac.uk/~jds/ for recent comets.
my limit there is mag 8 as mentioned before somewhere if u want the positions for all stars and galaxies,etc
buy guide 9 software, i have guide 5 and 9
under $100 i think https://www.projectpluto.com/
IP: Logged |
mirage29
Knowflake Posts: 8443
From: us
Registered: May 2012
|
posted October 04, 2017 12:13 AM
quote:
Originally posted by bjorkstrand:
https://www.projectpluto.com/
{energizing your link} http://www.projectpluto.com/ The last site (UK) you left is rich in links at bottom of page, too. Thanks Bjorkstrand.  IP: Logged |
Lindaland
UBBFriend: Email This Page to Someone! 
