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- O R B S 1 3 0
- 11/16/87
-
- ORBS Release 1.4.0 corrects a couple of minor problems which surfaced
- after the initial release.
-
- (1) If a particular listing traversed 2400 UTC, the printed time did
- not reset to 0000 UTC.
-
- (2) Azimuth headings from the observer to the satellite were totally
- erroneous for observers located in the Southern hemisphere.
-
- These two errors were caused by typos which have been corrected.
-
- The ELEMENT UPDATE's editing functions have been beefed up. In addition
- to detecting missing/erroneous keywords, grossly erroneous values will
- now be detected as well. Previously, a Julian date such as 872269
- would have been accepted, resulting in a runtime error when the data
- had to be used in calculations. Rough range-checking will now catch
- most typical typos. The values and ranges tested are:
-
- Epoch time: > 78000 AND <99367
- Inclination: >= 0 AND <= 180
- RA of node: >= 0 AND <= 360
- Eccentricity: >= 0 AND <= 1
- Arg of perigee: >= 0 AND <= 360
- Mean anomaly: >= 0 AND <= 360
- Decay rate: >= -1 AND <= +1
-
-
- To install ORBS, merely unARC all the files (into a specific directory if
- you're using a hard disk), and execute ORBS. The menus will guide you
- through the rest.
-
- Enjoy ORBS, and thanks for trying it..
-
- 73, Ron W0PN