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Jan 24, 2016

The NEO 2015 TY178 on 2016-01-23

 Background
(as of 2016-01-23) 
 Astrometrica object verification window with a(1 of 3) stack of 15- 20 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at (MPC Code Q62) Siding Spring NSW Australia

 Astrometrica object verification window with a(2 of 3) stack of 15- 20 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at (MPC Code Q62) Siding Spring NSW Australia
Astrometrica object verification window with a(3 of 3) stack of 15- 20 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at (MPC Code Q62) Siding Spring NSW Australia

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Jan 21, 2016

The Asteroid 2016 BE on 2016-01-20

 Background
(as of 2016-01-21  14:40 UTC)
(Some of the infomation here may quickly become out dated) 
 Astrometrica object verification window with a(1 of 3) stack of 12- 60 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T11 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer) at (MPC Code H06) Mayhill, New Mexico (New Mexico Skies)(2016-01-20)
 Astrometrica object verification window with a(2 of 3) stack of 12- 60 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T11 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer) at (MPC Code H06) Mayhill, New Mexico (New Mexico Skies)(2016-01-20)
 Astrometrica object verification window with a(3 of 3) stack of 12- 60 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T11 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer) at (MPC Code H06) Mayhill, New Mexico (New Mexico Skies)(2016-01-20)
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Jan 18, 2016

The NEO 2015 TY178 on 2016-01-18

 Background
(as of 2016-01-18) 
 Astrometrica object verification windows with a(1 of 4) stack of 8- 30 Second Luminance BIN2 Images taken with iTelescope.net's (T17 0.43-m f/6.8 astrograph + CCD)  at MPC Code Q62 Siding Spring NSW Australia
 
 Astrometrica object verification window with a(2 of 4) stack of 8- 30 Second Luminance BIN2 Images taken with iTelescope.net's (T17 0.43-m f/6.8 astrograph + CCD)  at MPC Code Q62 Siding Spring NSW Australia
 
 Astrometrica object verification window with a(3 of 4) stack of 8- 30 Second Luminance BIN2 Images taken with iTelescope.net's (T17 0.43-m f/6.8 astrograph + CCD)  at MPC Code Q62 Siding Spring NSW Australia
 
 Astrometrica object verification window with a(4 of 4) stack of 8- 30 Second Luminance BIN2 Images taken with iTelescope.net's (T17 0.43-m f/6.8 astrograph + CCD)  at MPC Code Q62 Siding Spring NSW Australia

The NEO 2015 TY178 on 2016-01-17

 Background
(as of 2016-01-17) 
 Astrometrica object verification window with a(1 of 3) stack of 10- 30 Second Luminance BIN2 Images taken with iTelescope.net's (T17 0.43-m f/6.8 astrograph + CCD)  at MPC Code Q62 Siding Spring NSW Australia
 Astrometrica object verification window with a(2 of 3) stack of 10- 30 Second Luminance BIN2 Images taken with iTelescope.net's (T17 0.43-m f/6.8 astrograph + CCD)  at MPC Code Q62 Siding Spring NSW Australia
 Astrometrica object verification window with a(3 of 3) stack of 10- 30 Second Luminance BIN2 Images taken with iTelescope.net's (T17 0.43-m f/6.8 astrograph + CCD)  at MPC Code Q62 Siding Spring NSW Australia
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Jan 16, 2016

Comet C/2013 X1 (PANSTARRS) On 2016-01-15

Comet C/2013 X1 (PANSTARRS) On 2016-01-15 

 Background
(as of 2016-01-15)
The Comet C/2013 X1(PANSTARRS) on 2016-01-15 from
Mayhill, New Mexico (New Mexico Skies) - (MPC Code H06) on 2016-01-15
a stack of 27-60 seconds Luminance BIN2
images taken with itelescope.net's
(TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer)

Astrometrica object verification window a 60 second Luminance BIN2 image(1 of 27) taken with itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer) fromMayhill, New Mexico (New Mexico Skies) - (MPC Code H06)


Astrometrica object verification window a 60 second Luminance BIN2 image(9 of 27) taken with itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer) fromMayhill, New Mexico (New Mexico Skies) - (MPC Code H06)

Astrometrica object verification window a 60 second Luminance BIN2 image(18 of 27) taken with itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer) fromMayhill, New Mexico (New Mexico Skies) - (MPC Code H06)

Astrometrica object verification window a 60 second Luminance BIN2 image(27 of 27) taken with itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer) fromMayhill, New Mexico (New Mexico Skies) - (MPC Code H06)

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Jan 14, 2016

M1-The Crab Nebula

M1-The Crab Nebula (c) Steven M. Tilley
24-300 seconds BIN1 Color using itelescope.net's Telescope 3
(SBIG ST-8300C (One Shot Color) CCD)

Jan 11, 2016

The NEO 2015 YC2 on 2016-01-10



 Background
(as of 2016-01-11)
  •  Object: 2015 YC2
  • Approximate Diameter: 56 m - 120 m (183.727 feet to 393.701 feet) ( Absolute Magnitude:  H= 23.4 )
  •  Orbit Type:  Apollo 
  •  On the Sentry Risk Table:  Yes  NOTE this  is NOT a prediction of an  impact  but rather a statement there is insufficient observational data rule out  an impact -- for infomation read  Understanding Risk Pages by Jon Giorgini
  • On the NEODyS CLOMON2 risk page: Yes
  • First Observed  on: 2015 12 19.27013
  • First Observed  By: Mt. Lemmon Survey (MPC Code G96) ,  (The Discovery M.P.E.C.: MPEC 2015-Y67 : 2015 YC2)
  •  Last Observed: 2016 01 11.36839
  •  Data-Arc Span: 23 day
  •  Number Oppositions : 1
  •  Number of Observations Made:  90
  • Next Close-Approach:  Will safely pass Earth on  2016-Jan-15 at  Nominal Distance of 0.0126600709130298 AU (4.93 (LD)) or1,176,827.112  miles or (1,893,919.651 KM)
(1 of 3) Stacks of 8 - 15 Second Luminance BIN2 images taken with  itelescope.net's (TEL T11 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer)
(2 of 3) Stacks of 8 - 15 Second Luminance BIN2 images taken with  itelescope.net's (TEL T11 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer)
(3 of 3) Stacks of 8 - 15 Second Luminance BIN2 images taken with  itelescope.net's (TEL T11 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer)

(1 of 3) Stacks of 15 - 15 Second Luminance BIN2 images taken with Using itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer)

(2 of 3) Stacks of 15 - 15 Second Luminance BIN2 images taken with Using itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer)
(3 of 3) Stacks of 15 - 15 Second Luminance BIN2 images taken with Using itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer)
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Jan 1, 2016

2015 YU9 --- The Asteroid Formerly Known As 2015 YB



The asteroid that was confirmed as a NEO, set to make a close approach of less than 0.2 lunar distances to Earth, which was given the provisional designations 2015 YB only to have its confirmation retracted, as been confirmed as a Hungaria asteroid (a type of Inner Main-belt object) and given the provisional designations 2015 YU9. The story of the close approach has echo across social media.   However, the story that was missed by many is a story how science works.
 
First Background on observing asteroid (and comet).

In the world of asteroid (and comet) observing a series of images of the sky is taken over period of time with telescope and CCD.  Then data reduction is done on the images looking for moving object.  The observer makes two or more observation for each moving object.   All “known” objects have a designation, if the observer knows the object’s designation the observation are made under their designation.   If it is an unknown object or in doubt an observer-assigned temporary designation is use.  The Minor Planet Center’s computers check any observer-assigned temporary designation to see they are “known” objects, if any are unknown and “their NEO score is 65” are posted to “The NEOConfirmation Page”(NEOCP) .   

Many observers watch the NEOCP and do follow-up observation on listed objects.   As more observational data comes in better orbital elements can be generated, the "unknown" object maybe shown to be a "known" object or shown to be "new" object. When there is there is enough observation to generate useful orbital elements the object is assigned a provisional designation by the Minor Planet Center, if the object is a NEO, a comet, or unusual a Minor Planet Electronic Circulars will be issue.  It is possible over time with additional observational data two or more provisional designations maybe link showing there are the same object.   After four well observed oppositions for main-belt (two to three for NEOs) asteroids are number (their permanent designation). 
 
The great thing about asteroid and comet observing is your work is a cross check and will be cross check by the work other observers.  A scary about asteroid and comet observing is your work is a cross check and will the work is cross check by other observers.  Therefore asteroid and comet observing requires healthy sense of pride in one work tempered by healthy sense humility.  As an observer I enjoy seeing additional observations of objects I follow and dread not seeing any additional observations of objects I followed. 

 A case of dread is in 2015 I reported observation using the observer-assigned temporary designation SMT000I (from H06) they where link to observations of a NEOCP object from G45 and assigned the provisional designations 2015TJ237 (Orbit type: Mars-crosser) I have been unable observe 2015 TJ237 and no one has  observed 2015 TJ237 since my observations. I think the observations of 2015 TJ237 from G45 should belong to (440043) 2002 QF24 (Orbit type: Mars-crosser).  When all is said and done observing  is done by (or at the direction) of humans and can be subject to errors and other observers can catch the errors.

Now Back to 2015 YB 

2015 YB was not an ordinary asteroid, it was to  make a close approach of less than 0.2 lunar distances to Earth so many observers  where looking  for it where it "should" be and did not find it so the errors where found and the confirmation was retracted. The object was  then returned to the NEOCP under its observer-assigned temporary designations. I have looked the object when it was 2015 YB so had to find it. I was able to image the object make observations and report the observations. Other observers also report the observations of the object. On 2015-12-31 the Minor Planet Center made a  notation on a cross-reference page  stating the object was   assigned  the provisional designations 2015 YU9 when MPEC 2015-Y95: DAILY ORBIT UPDATE (2015 DEC. 31 UT) was issue it list its orbit (Orbit type: Hungaria)

The NEOCP object WY032FF= 2015 YU9 (Inner Main-belt Asteroid)  from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)a Stack of 5 - 120 Second Luminance BIN2 images Using itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD) By Steven M Tilley

The NEOCP object WY032FF= 2015 YU9 (Inner Main-belt Asteroid)  from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)a Stack of 5 - 120 Second Luminance BIN2 images Using itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD) By Steven M Tilley


The NEOCP object WY032FF= 2015 YU9 (Inner Main-belt Asteroid)  from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)a Stack of 5 - 120 Second Luminance BIN2 images Using itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD) By Steven M Tilley
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