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Showing posts with label Asteroid. Show all posts
Showing posts with label Asteroid. Show all posts

Apr 23, 2018

Confirmation images of the NEO 2018 HC1

A confirmation image of the NEO 2018 HC1 on
2018-04-21 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15 - 05 Second Luminance BIN2
images taken with iTelescope.net's
(T30 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley
A confirmation image of the NEO 2018 HC1 on
2018-04-21 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15 - 05 Second Luminance BIN2
images taken with iTelescope.net's
(T30 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley
A confirmation image of the NEO 2018 HC1 on
2018-04-21 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15 - 05 Second Luminance BIN2
images taken with iTelescope.net's
(T30 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley

Apr 6, 2018

The NEO 2018 BY2 - Information Sheet

The NEO 2018 BY2 on 2018-03-31 from Mayhill, New Mexico
(New Mexico Skies) - (MPC Code H06) a stack of 9 - 20 Second Luminance 
BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)

By Steven M. Tilley
The NEO 2018 BY2 on 2018-03-31 from Mayhill, New Mexico
(New Mexico Skies) - (MPC Code H06) a stack of 9 - 20 Second Luminance 
BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)

By Steven M. Tilley
The NEO 2018 BY2 on 2018-03-31 from Mayhill, New Mexico
(New Mexico Skies) - (MPC Code H06) a stack of 9 - 20 Second Luminance 
BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)

By Steven M. Tilley
The NEO 2018 BY2 on 2018-03-31 from Mayhill, New Mexico
(New Mexico Skies) - (MPC Code H06) a stack of 9 - 20 Second Luminance 
BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)

By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images 
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images 
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images 
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images 
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD)
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD)
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD)
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD) By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD)
By Steven M. Tilley
 Background
(as of 2018-04-06)
  • Object: 2018 BY2
  • Orbit Type: Apollo [NEO, PHA]
  • Approximate Diameter: 210 m - 470 m ( 688.976  feet to 1541.995  feet) (Absolute Magnitude: H= 20.5)
  • On the Sentry Risk Table: NO
  • On the NEODyS CLOMON2 risk page: NO 
  • First(Precovery) Observation was made: 2018 01 03.45659
  • Discovery observation was made on: 2018 01 17.31782
  • Discovery observation was made by Pan-STARRS 1, Haleakala (MPC Code F51) The Discovery M.P.E.C.:MPEC 2018-B85 : 2018 BY2
  • Last Observation (publish): 2018 04 05.42579 (at iTelescope Observatory, Siding Spring,  Australia (MPC Code Q62) )
  • Data-Arc Span (publish):  days 92
  • Number of Optical Observations(published):146
  • Observatories Reporting (Published) Observations(MPC Code):
    • (246) Klet Observatory-KLENOT, Czech Republic.
    • (474) Mount John Observatory, Lake Tekapo, New Zealand. 
    • (568) Mauna Kea, US/Hawaii. 
    • (587) Sormano, Italy. 
    • (691) Steward Observatory, Kitt Peak - Spacewatch, US/Arizona.
    • (703) Catalina Sky Survey, US/Arizona.
    • (711) McDonald Observatory, Fort Davis,US/Texas.
    • (807) Cerro Tololo Observatory, La Serena,  Chile.
    • (A48) Povegliano Veronese, Italy.
    • (B74) Santa Maria de Montmagastrell, Spain.
    • (F51) Pan-STARRS 1, Haleakala,US/Hawaii.
    • (H01) Magdalena Ridge Observatory, Socorro, US/New Mexico. 
    • (H06) iTelescope Observatory, Mayhill, US/New Mexico.
    • (H21) Astronomical Research Observatory, Westfield, US/Illinois.
    • (H36) Sandlot Observatory, Scranton, US/Kansas.
    • (H45) Arkansas Sky Obs., Petit Jean Mountain South, US/Arkansas.
    • (I52) Steward Observatory, Mt. Lemmon Station,US/Arizona.
    • (K61) Rokycany Observatory, Czech Republic.
    • (L04) ROASTERR-1 Observatory, Cluj-Napoca, Romania.
    • (Q62) iTelescope Observatory, Siding Spring, Australia/NSW.
    • (T05) ATLAS-HKO, Haleakala, US/Hawaii.
    • (U69) iTelescope SRO Observatory, Auberry,
    • (W89) Cerro Tololo-LCO Aqawan A #1, Chile.
  • Perihelion Distance 1.014723117954455 (AU)
  • Aphelion Distance: 2.264719569328387 (AU)
  • Earth MOID (Earth center to NEO center): 0.04159 AU ((16.186 LD)), ( 975.57 Earth radii) or 3,866,032.024  miles ( 6,221,775.442 ( KM))
  • Next Close-Approach to Earth:  Will safely pass Earth on 2018-Apr-11:
    • Minimum Distance(Earth center to NEO center) of  0.0609381959952516 (AU) ( 23.715 (LD)), 1429.89 (Earth radii) or  5,664,559.202  miles ( 9,116,224.365(KM)) 
    • Nominal Distance(Earth center to NEO center) of 0.0609437887594874 (AU) ( 23.718 (LD)), (1430.02  Earth radii) or 5,665,079.082 miles ( 9,117,061.03 (KM))
    • Maximum Distance(Earth center to NEO center) of  0.0609493815227982 (AU) ( 23.72 (LD)), (1430.156443 Earth radii) or 5,665,598.962 miles (9,117,897.696 (KM))   

Mar 19, 2018

Confirmation of the NEO 2018 FC1

The NEOCP object ZF278E4(now the NEO 2018 FC1) on 2018-03-19
a stack of 20-30 second luminance BIN2 images taken with
 
iTelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD)
 at Siding Spring Observatory, Coonabarabran, NSW, Australia
(MPC code Q62) 

By Steven M. Tilley
The NEOCP object ZF278E4(now the NEO 2018 FC1) on 2018-03-19
a stack of 20-30 second luminance BIN2 images taken with
 
iTelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD)
 at Siding Spring Observatory, Coonabarabran, NSW, Australia
(MPC code Q62) 

By Steven M. Tilley
The NEOCP object ZF278E4(now the NEO 2018 FC1) on 2018-03-19
a stack of 20-30 second luminance BIN2 images taken with
 
iTelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD)
 at Siding Spring Observatory, Coonabarabran, NSW, Australia
(MPC code Q62) 

By Steven M. Tilley
 Background
(as of 2018-02-19)
  • Object: 2018 FC1
  • Orbit Type: Amor [NEO]
  • Approximate Diameter: 120 m - 260 m (393.701 feet to 853.018 feet) (Absolute Magnitude: H= 21.766)
  • On the Sentry Risk Table: NO
  • On the NEODyS CLOMON2 risk page: NO 
  • Discovery observation was made on: 2018 03 17.33572
  • Discovery observation was made by Catalina Sky Survey (MPC Code 703) The Discovery M.P.E.C.:MPEC 2018-F40 : 2018 FC1
  • Last Observation (publish): 2018 03 19.53148 (at iTelescope Observatory, Siding Spring,  Australia (MPC Code Q62) )
  • Data-Arc Span (publish): 2 days 
  • Number of Optical Observations(published):42
  • Observatories Reporting (Published) Observations(MPC Code):
    • (033) Karl Schwarzschild Observatory, Tautenburg, Germany.
    • (474) Mount John Observatory, Lake Tekapo, New Zealand.
    • (703) Catalina Sky Survey, US/Arizona.
    • (734) Farpoint Observatory, Eskridge, US/Kansas.
    • (807) Cerro Tololo Observatory, La Serena, Chile.
    • (E23) Arcadia, Australia/NSW.
    • (I52) Steward Observatory, Mt. Lemmon Station, US/Arizona.
    • (Q62) iTelescope Observatory, Siding Spring,  Australia/NSW. 
  • Perihelion Distance:1.106589693409455(AU)
  • Aphelion Distance: 2.130212399099761(AU)
  • Earth MOID (Earth center to NEO center): 0.19123 AU (( 74.421 LD)), (4490.28 Earth radii) or  17775939 miles (  (28607600 KM))
  • Next Close-Approach to Earth:  Will safely pass Earth on 2018-Mar-30 at a 
    • Minimum Distance(Earth center to NEO center) of 0.192881774004264 (AU) (75.064 (LD)), (4,516.07 Earth radii) or  17,878,004 miles ( (28,854,702 KM)) 
    • Nominal Distance(Earth center to NEO center) of 0.196815739374881(AU) ( 76.595 (LD)), ( 4,621.44 Earth radii) or 18,295,166 miles (29,443,216 (KM))
    • Maximum Distance(Earth center to NEO center) of 0.20074975749401 (AU) ( 78.126 (LD)), ( 4,713.82 Earth radii) or  18,660,856 miles (30,031,736 (KM))   

Oct 11, 2017

The Flyby By a "Astronomical Yard" of 2012 TC4


On 2017 October 12, the asteroid 2012 TC4 will flyby the Earth. This flyby has received a great deal of coverage in the media. When comes to media coverage of any asteroid flybys one of the most overused expressions is "close shave." Anyone who ever had to shave for work knows what a close shave is and what one is not. By comparing the solar system to the known universe, Pluto would be a "close shave" astronomically speaking. However, the subject at hand is the flyby of the Earth by an asteroid, therefor the Earth may serve a useful point of comparison.

If one wishes to simplify the matter, one could create a scale model of the Earth by way of a spreadsheet. If, one uses a ball with a diameter of 29.21 cm (11.5 inches) [this happen to be same as the as the length of a football ball(American)] to represent the Earth:

  • A CM would be 436.2204724 KM, an inch would be 1108 KM.
  • The International Space Station would be 9.2 mm away.
  • Geosynchronous orbit would be 820.4 mm, 0.8204 m, or 0.8972 yards
  • 2012 TC4 Nominal Distance(JPL)[2017-Oct-10] would be 1003.6 mm, 1.0036 m, or 1.0976 yards
  • Light-second would be 6872.5 mm, 6.8725 m, or 7.5159 yards
  • Lunar distance would be 8666.1 mm, 8.6661 m, or 9.4773 yards.
It should be noted since the start of The 2012 TC4 Observing Campaign the orbital uncertainty has been dramatically reduced. This many of made much of media coverage in the blogosphere out of date.
Useful Links:

Oct 8, 2017

The Asteroid 2012 TC4 on 2017-10-07

The Asteroid 2012 TC4 on 2017-10-07 from Siding Spring Observatory, Coonabarabran, NSW, Australia (MPC Code Q62) useing  iTelescope.net's (TEL T30 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)

Useful Links:

Oct 7, 2017

The Asteroid 2012 TC4 on 2017-10-06

The NEO 2012 TC4 on 2017-10-06 from AstroCamp Observatory. Nerpio, Spain (MPC I89) a stack of 45-60 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T07 0.43-m f/6.8 reflector + CCD)
(C) Steven M. Tilley
The NEO 2012 TC4 on 2017-10-06 from AstroCamp Observatory. Nerpio, Spain (MPC I89) a stack of 15-60 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T07 0.43-m f/6.8 reflector + CCD)
(C) Steven M. Tilley
The NEO 2012 TC4 on 2017-10-06 from AstroCamp Observatory. Nerpio, Spain (MPC I89) a stack of 15-60 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T07 0.43-m f/6.8 reflector + CCD)
(C) Steven M. Tilley
The NEO 2012 TC4 on 2017-10-06 from AstroCamp Observatory. Nerpio, Spain (MPC I89) a stack of 15-60 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T07 0.43-m f/6.8 reflector + CCD)
(C) Steven M. Tilley
Useful Links: