Has anyone observed OGO 1 (00879, 64-054A)? This old spacecraft is in a highly eccentric orbit (e~0.8) with a long period (over 2.6 days). I noticed that it makes a perigee pass over the middle of the US in a dark sky on the morning of Jan 19 (perigee around 11:24 UTC, height 9800 km). This is one of those "ultra-deep space" objects that shows a large difference in ephemeris output depending on whether the TLE propagator does (or does not) apply deep-space perturbation offsets at epoch. In the case of the Saturday AM perigee pass, I found that the two methods give a similar path among the stars, but with a large time difference (over 11 minutes!). Has anyone actually observed OGO 1 to see which approach is correct? Thanks, Curtis Haase Dallas TX 73007.2024@compuserve.com ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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