Iridium satellite orbits incorrect

Bug #1643311 reported by Jim Goodall on 2016-11-20
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Stellarium
Medium
Nick Fedoseev

Bug Description

I am see conflicting information when I compare Heavens Above (HA) predictions to Stellarium. Specifically the following incident has multiple errors:

Location: 38.6089°N, 78.0561°W

Heavens Above (HA) predicts the following flare:
Flare Details
Date: 23 November 2016
Time: 18:39:02
Brightness: -8
Altitude: 45°
Azimuth: 34°
Satellite: Iridium 11
Distance to satellite: 1049 km
Angle off flare centre-line: 0.2°
Distance to flare centre: 3 km
Flare producing antenna: left
Sun altitude: -20.3°
Angular separation from Sun: 135.1°

However, I tried to simulate this in Stellarium and I get two other flares not predicted by HA:
Iridium 26 flare at 18:38:09 at magnitude -2.5
Iridium 20 flare at 18:39:02 at magnitude -7.2
And Iridium 11 is below the horizon at this time!

So why is the Iridium 11 info conflicting and are these other two flares real?

Related branches

Alexander Wolf (alexwolf) wrote :

First, Stellarium do not related to Heavens Above website and we can't comment how accurate is predictions on that website. Second, are you updated the TLE for Iridiums? Third, for any software/website the criterion of accuracy can be only real phenomena - please report the errors in comparison with real sky.

Changed in stellarium:
status: New → Incomplete
gzotti (georg-zotti) wrote :

As always with satellites, update TLE orbital elements before comparing with anything.

Alexander Wolf (alexwolf) wrote :

Any news?

Alexander Wolf (alexwolf) wrote :
Changed in stellarium:
milestone: none → 0.15.2
status: Incomplete → Fix Committed
importance: Undecided → Low
assignee: nobody → Nick Fedoseev (nick-ut2uz)
importance: Low → Medium
Alexander Wolf (alexwolf) wrote :

Please check this issue on version 0.90.0.9086: https://launchpad.net/stellarium/trunk/0.90.0

Changed in stellarium:
status: Fix Committed → Fix Released
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