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Detailed finder chart for YU55 near Altair?

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#1 bookworm14

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Posted 06 November 2011 - 12:58 PM

Asteroid YU55 will pass just south of Altair (Alpha Aquilae) about 10:30pm EST on 08 Nov. I have not located anything more precise than this except low res charts and columns of coordinates, which are useless to me. Is there a detailed finder chart for the Altair region that shows how close the object will pass to Altair and Beta Aquilae, and the times?

bookworm

#2 mrfritz44

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Posted 06 November 2011 - 04:24 PM

Try downloading Stellarium and punching in the coordinates for the given night. You should be able to plot exactly where it is relative to the stars.

Fred

#3 mrfritz44

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Posted 06 November 2011 - 05:24 PM

You can paste in this bit of text in the
C:\Users\YOUR USER NAME HERE\AppData\Roaming\Stellarium\data directory assuming you have Windows 7.

[2005 YU55 Asteroid]
name = 2005 YU55
minor_planet_number = 136200
parent = Sun
radius = 0.2
oblateness = 0.0
albedo = 0.007
lighting = true
halo = false
color = 1.0,1.0,1.0
tex_halo = NULL
tex_map = nomap.png
coord_func = comet_orbit
orbit_TimeAtPericenter = 2455814.833933352027
orbit_PericenterDistance = .6557046626343621
orbit_Eccentricity = .4325854390036394
orbit_ArgOfPericenter = 271.7036689643693
orbit_AscendingNode = 37.37226220529077
orbit_Inclination = .3954236980854217

#4 bookworm14

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Posted 06 November 2011 - 07:02 PM

Thanks, but I have Windows XP.

bookworm

#5 Centaur

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Posted 06 November 2011 - 07:29 PM

Is there a detailed finder chart for the Altair region that shows how close the object will pass to Altair and Beta Aquilae, and the times?


Parallax is a significant factor for such a close object. Therefore I will need to know your precise location: longitude, latitude, altitude and time zone. It you provide that, I will answer your question regarding Altair. For observers at Chicago’s Adler Planetarium, I calculate that the asteroid will appear to pass nearest Altair at an angular distance of 1.846°, position angle 161.595° and zenith angle 156.933° on November 8 at 16:44:22 CST. That will be only seven minutes after sunset for that location. Position angle is measured counterclockwise from celestial north. Zenith angle is measured counterclockwise from the zenith.




#6 Tech Hiker

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Posted 06 November 2011 - 08:29 PM

Thanks, but I have Windows XP.

In XP the path is:
C:\Documents and Settings\YourUsername\Application Data\Stellarium\data\ssystem.ini

Paste mrfritz44's data in at the end of this file.

#7 MessiToM

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Posted 06 November 2011 - 08:46 PM

You can paste in this bit of text in the
C:\Users\YOUR USER NAME HERE\AppData\Roaming\Stellarium\data directory assuming you have Windows 7.

[2005 YU55 Asteroid]
name = 2005 YU55
minor_planet_number = 136200
parent = Sun
radius = 0.2
oblateness = 0.0
albedo = 0.007
lighting = true
halo = false
color = 1.0,1.0,1.0
tex_halo = NULL
tex_map = nomap.png
coord_func = comet_orbit
orbit_TimeAtPericenter = 2455814.833933352027
orbit_PericenterDistance = .6557046626343621
orbit_Eccentricity = .4325854390036394
orbit_ArgOfPericenter = 271.7036689643693
orbit_AscendingNode = 37.37226220529077
orbit_Inclination = .3954236980854217



THANK YOU KINDLY!!!
I plugged that info in and stellarium now brings up 2005 yu55 when i use the search box. COOL BEANS

#8 RickShelton

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Posted 06 November 2011 - 10:20 PM

Filename to put the data in would help in Win7 as the only one I have is user_locations.txt and when I tried to add it to that it froze stellirium.
Thanks,
Rick





You can paste in this bit of text in the
C:\Users\YOUR USER NAME HERE\AppData\Roaming\Stellarium\data directory assuming you have Windows 7.

[2005 YU55 Asteroid]
name = 2005 YU55
minor_planet_number = 136200
parent = Sun
radius = 0.2
oblateness = 0.0
albedo = 0.007
lighting = true
halo = false
color = 1.0,1.0,1.0
tex_halo = NULL
tex_map = nomap.png
coord_func = comet_orbit
orbit_TimeAtPericenter = 2455814.833933352027
orbit_PericenterDistance = .6557046626343621
orbit_Eccentricity = .4325854390036394
orbit_ArgOfPericenter = 271.7036689643693
orbit_AscendingNode = 37.37226220529077
orbit_Inclination = .3954236980854217



#9 RedLionNJ

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Posted 06 November 2011 - 10:49 PM

Not sure about a detailed finder chart, but for myself in NJ, it will be just over 1.6 degrees south of Altair at 5:40pm. I judge this to be about the time I should be able to pick up an eleventh magnitude object without too severe a difficulty.

Good hunting!

#10 bookworm14

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Posted 06 November 2011 - 10:53 PM

Curt,
Thanks for doing this. My coordinates are:
31d 28' 32.97" N
83d 29' 29.13" W
elevation 349 ft Eastern Time Zone

bookworm

#11 Centaur

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Posted 06 November 2011 - 11:08 PM

Curt,
Thanks for doing this. My coordinates are:
31d 28' 32.97" N
83d 29' 29.13" W
elevation 349 ft Eastern Time Zone

bookworm


Dick, for your location I calculate that the asteroid will appear to pass nearest Altair at an angular distance of 1.655°, position angle 161.574° and zenith angle 145.323° on November 8 at 17:44:29 EST. Position angle is measured counterclockwise from celestial north. Zenith angle is measured counterclockwise from the zenith.

#12 mrfritz44

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Posted 07 November 2011 - 05:59 AM

Woops!

ssystem.ini

#13 PhilCo126

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Posted 07 November 2011 - 06:58 AM

Also check: http://www.minorplan...ObsGuides/YU55/

#14 RickShelton

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Posted 07 November 2011 - 08:19 AM

What worked in my Win7 64 system was adding it to
C:\Program Files (x86)\Stellarium\data\ssystem.ini

Rick

#15 LakeHavasu

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Posted 07 November 2011 - 10:18 PM

MrFritz44 - Much appreciated for the Stellarium text. Works like a charm to bring up 2005YU55. Don't forget folks you may have to change the file view settings when looking for the "AppData" location to install the text.(Using Windows7)
Steve M.
Lake Havasu AZ

#16 Alan French

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Posted 07 November 2011 - 11:34 PM

You can paste in this bit of text in the
C:\Users\YOUR USER NAME HERE\AppData\Roaming\Stellarium\data directory assuming you have Windows 7.

[2005 YU55 Asteroid]
name = 2005 YU55
minor_planet_number = 136200
parent = Sun
radius = 0.2
oblateness = 0.0
albedo = 0.007
lighting = true
halo = false
color = 1.0,1.0,1.0
tex_halo = NULL
tex_map = nomap.png
coord_func = comet_orbit
orbit_TimeAtPericenter = 2455814.833933352027
orbit_PericenterDistance = .6557046626343621
orbit_Eccentricity = .4325854390036394
orbit_ArgOfPericenter = 271.7036689643693
orbit_AscendingNode = 37.37226220529077
orbit_Inclination = .3954236980854217


Where did you get your elements? They differ from those in the JPL Small-Body Database Browser and the IAU Minor Planet Center.

Clear skies, Alan

#17 mrfritz44

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Posted 08 November 2011 - 06:27 AM

I Googled them and cannot tell you honestly where I pulled them from. I did a comparison to some charts and the track took it just east of Altair at 17:45 EST tonight which seemed right so I ran with the edit.

This seems to be recent however:

http://www.frequency...cts-on/21408685

Fred

#18 Alan French

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Posted 08 November 2011 - 08:00 AM

Fred,

Thanks! I'm trying to untangle differences between a couple of charts I have.

Clear skies, Alan

#19 FrenchStar

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Posted 08 November 2011 - 09:37 AM

Is it me or is thing thing going REAL fast?!?!... wow... When I fired up Stellarium, I was sure I was in "accelerated" mode.... lol

#20 Alan French

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Posted 08 November 2011 - 10:18 AM

Be careful. Some planetarium programs apparently don't handle such close asteroids well, and Steallarium is apparently one of them.

Clear skies, Alan

#21 MadMan

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Posted 08 November 2011 - 11:08 AM

Is the above insert for Stellarium correct? YU-55 shows up and is trackable after I did the insert into ssystem.ini, but it is nowhere near Altair at 5:44 from my location here in GA.

#22 FrenchStar

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Posted 08 November 2011 - 11:40 AM

Be careful. Some planetarium programs apparently don't handle such close asteroids well, and Steallarium is apparently one of them.

Clear skies, Alan


Thanks for the "heads up"! I will see if Skytools is more reliable...

#23 kevinrr

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Posted 08 November 2011 - 11:46 AM

Didn't work for me, stellarium is unresponsive when I try to search for "yu55" or "asteroid yu55". I think that the formatting of the pasted-in values is not correct, as all the previous values are separated only by an odd little square symbol, no spaces or lines.

#24 TenthEnemy

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Posted 08 November 2011 - 12:41 PM

Try searching for "2005 YU55"

#25 Ctwo

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Posted 08 November 2011 - 04:04 PM

Is this site giving accurate charting? It is showing YU55 going by Altair at about 8:30pm where I am, central west coast.

http://thewatchers.a...or-skywatchers/






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