PDA

View Full Version : OT.How to convert degrees mins sec to decimal

miker
07-08-2006, 07:18 PM
Hi, The NASA site requires your location in decimal for "Sighting Opportunities". I have my exact location in Degrees Minutes and Seconds.
South will be minus of course.
My co-ordinates were given to me by a visitor with a GPS years ago.
How do I convert to Decimal?

Rgds

mklotz
07-08-2006, 07:26 PM
deg + min/60 + sec/3600 = decimal degrees

CCWKen
07-08-2006, 07:28 PM
http://www.fcc.gov/mb/audio/bickel/DDDMMSS-decimal.html

Or do it yourself with this:
To change from DM or DMS to DD, Decimal degrees = whole number of degrees, plus minutes divided by 60, plus seconds divided by 3600. (Use 4 decimal positions.)

miker
07-08-2006, 07:40 PM
Thanks very much gentlemen.
The NASA online TV coverage is great.

rgds

Michael

LastOldDog
07-10-2006, 12:14 AM
Hi, The NASA site requires your location in decimal for "Sighting Opportunities". I have my exact location in Degrees Minutes and Seconds. S 33* 29' 18.9'' E 150* 49' 46.1" .
South will be minus of course.
My co-ordinates were given to me by a visitor with a GPS years ago.
How do I convert to Decimal?

Rgds

Many hand calculators have this sexagesimal function built in. Also useful for hours, minutes, and seconds conversions. Lloyd

Wirecutter
07-10-2006, 01:11 PM
sexagesimal function

There's actually a word for it?

I've always liked HP scientific calculators, and all I've owned have conversion between hours-minutes-seconds and decimal hours. I used to have to use them to tally up hours on a timecard, but they work just as well for degrees-minutes-seconds.

-Mark

Evan
07-10-2006, 01:40 PM
Unary
Binary
Ternal or ternary
Quartal
Quintal
Sextal
Septal
Octal
Novennary
Decimal or denary
Duodecimal (base 12)
Vigesimal (20)
Septemvigesimal (27)
Sexagesimal (60)

That's all I can remember for now but by the rules of latin a name can be constructed for any numerical value.

For instance, novemnonagintennary is base 99 and octononagintennary is 98. (I looked those up)

Incidentally, the months September (7), October (8), November (9) and December (10) are no longer correctly named since a couple of Roman emperors made two new months and named them after themselves, Julius and Augustus.

CCWKen
07-10-2006, 01:56 PM
Yikes, it's like reading a porn novel Evan! :D

Evan
07-10-2006, 02:06 PM
Yeah. Makes one wonder where the word "sex" originated since it means six of something. :eek::D:D

Must have been those romans...:D

John Stevenson
07-10-2006, 02:18 PM
Yeah. Makes one wonder where the word "sex" originated since it means six of something. :eek::D:D

Must have been those romans...:D

Why are you missing four ????

.

Evan
07-10-2006, 02:47 PM
Hmm. Should be quarternary, not quartal. Quartal is 1/4th.

miker
07-10-2006, 08:07 PM
"Many hand calculators have this sexagesimal function built in. Also useful for hours, minutes, and seconds conversions. Lloyd"

My calculator only has Sylvester and Tweety trying to do something that may be related to Evan and John's verbage.

I might just go to some other board and say how you have all been rude to me. So there!! :)