#1  
Old 16-01-2022, 06:59 PM
Finbar (Barry)
Registered User

Finbar is offline
 
Join Date: Dec 2020
Location: Malanda, Queensland, Australia
Posts: 62
Asteroid (7482) 1994 PC1 passing by

A heads up. This asteroid, (7482) 1994 PC1, is passing by. Its closest point is at 07:51 AEST/QLD time (18 Jan, 21:51 UTC) on 19 January, so best viewing night of 18 January.

I downloaded the data into Stellarium, which indicates that for us up here in the Cairns region it will be about 3° north of our zenith around 19:30, setting just south of west around 00:30. Magnitude 10 it will be observable by telescope, and at 19.56 km per second it is more than fast enough to be obviously moving against the stars - but it is badly timed because it is just hours after the full moon.

Northern latitudes should make for easier viewing but for our wet season clouds.

en.wikipedia.org/wiki/(7482)_1994_PC1

sciencealert.com

Cheers all,
Barry
Reply With Quote
  #2  
Old 16-01-2022, 10:56 PM
mswhin63's Avatar
mswhin63 (Malcolm)
Registered User

mswhin63 is offline
 
Join Date: May 2009
Location: Para Hills, South Australia
Posts: 3,620
I managed to get some images of it and just in 2 days it is noticeably faster. I was hoping to keep capturing but the clouds have rolled in and possibly here to stay. I am going to post my images when I have processed them.

I expect it will cross my scope view in its closet approach in a short time. I am running a 480mm with a 450D and they are no pin point object anymore.
Reply With Quote
  #3  
Old 17-01-2022, 07:17 PM
Finbar (Barry)
Registered User

Finbar is offline
 
Join Date: Dec 2020
Location: Malanda, Queensland, Australia
Posts: 62
If not too late, tonight may be easiest to find this asteroid in Eridanus approaching 4th mag star Beemim (upsilon3 Eri; HIP 20535) and passing it around 22:40 AEST (12:40 UTC). Also, from southern locales it is closest to your zeniths tonight - these few major places given for rough indication:
Brisbane, alt 82.5° transiting meridian at 20:32 our time.
Sydney, alt c.89° transiting at 20:39 your time.
Melbourne, alt c.87° transiting at 21:03 your time.
Adelaide, alt c.89.5° transiting at 20:57 your time.
Perth, alt 88.25° transiting at 20:53 your time.

It is all cloud up here, so nothing for me.
Clear skies to you!
Barry
Reply With Quote
  #4  
Old 18-01-2022, 05:34 PM
EpickCrom (Joe)
Epick Crom

EpickCrom is offline
 
Join Date: Jan 2021
Location: Perth
Posts: 382
Quote:
Originally Posted by Finbar View Post
If not too late, tonight may be easiest to find this asteroid in Eridanus approaching 4th mag star Beemim (upsilon3 Eri; HIP 20535) and passing it around 22:40 AEST (12:40 UTC). Also, from southern locales it is closest to your zeniths tonight - these few major places given for rough indication:
Brisbane, alt 82.5° transiting meridian at 20:32 our time.
Sydney, alt c.89° transiting at 20:39 your time.
Melbourne, alt c.87° transiting at 21:03 your time.
Adelaide, alt c.89.5° transiting at 20:57 your time.
Perth, alt 88.25° transiting at 20:53 your time.

It is all cloud up here, so nothing for me.
Clear skies to you!
Barry


Thanks Barry, I will try to check out this rare Astronomical event tonight here in Perth!

Joe
Reply With Quote
  #5  
Old 18-01-2022, 06:29 PM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 2,945
She's comin' in hot .... https://en.wikipedia.org/wiki/(7482)...e_approach.gif

At about 1km in diameter and 2 Million Kilometers away, its angular size is tiny - 0.1 arcseconds in diameter.

Best
JA

Last edited by JA; 18-01-2022 at 06:55 PM.
Reply With Quote
  #6  
Old 18-01-2022, 07:08 PM
Finbar (Barry)
Registered User

Finbar is offline
 
Join Date: Dec 2020
Location: Malanda, Queensland, Australia
Posts: 62
Of course those times were for last night. It has already moved to the other side of constellation Eridanus, and moves into Cetus tonight.

Today it transits the meridian in most places too early to be visible. I've snipped a screen shot from Stellarium showing the approximate track (yellow/orange line) over about 5 hours from 7:30pm QLD time. Movement is from the upper end of the line.

And, damn, it is all cloud here.
Attached Thumbnails
Click for full-size image (Track 2022-01-18.png)
85.7 KB49 views
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 09:28 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement
Testar
Advertisement