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Showing posts with label Close-Approach. Show all posts
Showing posts with label Close-Approach. Show all posts

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))   

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:

Oct 2, 2017

The Asteroid 2012 TC4 on 2017-10-01

 

The NEO 2012 TC4 on 2017-10-01 from
Sierra Remote Observatory. Auberry California USA (MPC U69)
a stack of 34-120 Second Luminance BIN2 Images
taken with iTelescope.net's
(TEL T24 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley
The NEO 2012 TC4 on 2017-10-01 from
Sierra Remote Observatory. Auberry California USA (MPC U69)
a stack of 15-120 Second Luminance BIN2 Images
taken with iTelescope.net's
(TEL T24 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley
 
The NEO 2012 TC4 on 2017-10-01 from
Sierra Remote Observatory. Auberry California USA (MPC U69)
a stack of 15-120 Second Luminance BIN2 Images
taken with iTelescope.net's
(TEL T24 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley
The NEO 2012 TC4 on 2017-10-01 from
Sierra Remote Observatory. Auberry California USA (MPC U69)
a stack of 15-120 Second Luminance BIN2 Images
taken with iTelescope.net's
(TEL T24 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley
 Background
(as of 2017-10-01)

  •  Object: 2012 TC4
  • Orbit Type: Apollo [NEO]
  • Approximate Diameter: 12m- 27 m  (39.3701 feet to 88.5827  feet)(Absolute Magnitude: H= 26.7)
  • 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 more information read  Understanding Risk Pages by Jon Giorgini
  • Torino Scale 0
    • "The likelihood of a collision is zero, or is so low as to be effectively zero. Also applies to small objects such as meteors and bodies that burn up in the atmosphere as well as infrequent meteorite falls that rarely cause damage.."
  • On the NEODyS CLOMON2 risk page: Yes
    • NEODyS Recovery Campaign: 2017-08-31 to 2017-10-24
  • Discovery observation was made: 2012 10 04.467661
  • Discovery observation was made by Pan-STARRS 1 (MPC Code F51) The Discovery M.P.E.C.: MPEC 2012-T18 : 2012 TC4
  • Last Observation (publish): 2017 09 28.45648 (by the at Pan-STARRS 1, Haleakala  (MPC Code F51 ) )
  • Data-Arc Span (publish):  1820 days (4.98 years)
  • Number of Optical Observations(published):445
  • Observatories Reporting (Published) Observations(MPC Code):
    • (089) Nikolaev, Ukraine.
    • (104) San Marcello Pistoiese,Italy.
    •  (113) Drebach, Germany.
    • (204) Schiaparelli Observatory,Italy.
    • (291) LPL/Spacewatch II, US/Arizona.
    • (300) Bisei Spaceguard Center-BATTeRS, Japan. 
    • (309) Cerro Paranal, Chile. 
    • (461) Szeged University, Piszkéstető Stn. (Konkoly), Hungary. 
    • (470) Ceccano, Italy.
    • (695) Kitt Peak, US/Arizona. 
    • (703) Catalina Sky Survey, US/Arizona. 
    • (716) Palmer Divide Observatory, Colorado Springs, US/Colorado.
    • (718) Tooele  (N40.641406 W112.295800)  US/Utah.  
    • (807) Cerro Tololo Observatory, La Serena,Chile.   
    • (857) Iowa Robotic Observatory, Sonoita US/Arizona.
    • (900) Moriyama, Japan.
    • (932) John J. McCarthy Obs., New Milford, US/Connecticut.
    • (B04) OAVdA, Saint-Barthelemy,Italy.  
    • (B88) Bigmuskie Observatory, Mombercelli, Italy.
    • (C32) Ka-Dar Observatory, TAU Station, Nizhny Arkhyz, Russia.
    • (C77) Bernezzo Observatory, Italy.
    • (E10) Siding Spring-Faulkes Telescope South, Australia/NSW.
    • (F51) Pan-STARRS 1, Haleakala, US/Hawaii.
    • (F65) Haleakala-Faulkes Telescope North, US/Hawaii.
    • (G40) Slooh.com Canary Islands Observatory,Canary Islands (Spain). 
    • (G48) Harlingten Research Observatory, Rancho Hildalgo, US/New Mexico.
    • (G96) Mt. Lemmon Survey,US/Arizona.  
    • (H01) Magdalena Ridge Observatory, Socorro, US/New   Mexico. 
    • (H06) iTelescope, Mayhill, US/New   Mexico. 
    • (H17) Angel Peaks Observatory,US/Colorado.
    • (H21) Astronomical Research Observatory, Westfield, US/Illinois. 
    • (H36) Sandlot Observatory, Scranton, US/Kansas.
    • (J04) ESA Optical Ground Station, Tenerife, Canary   Islands (Spain).  
    • (J16) An Carraig Observatory, Loughinisland,UK.
    • (J84) South Observatory, Clanfield,UK.
    • (J95) Great Shefford,UK.  
    • (T09) Mauna Kea-UH/Tholen NEO Follow-Up (Subaru), US/Hawaii.
    • (T12) Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m),US/Hawaii. 
    • (U69) iTelescope SRO Observatory, Auberry, US/California.  
    • (W85) Cerro Tololo-LCO A, Chile.
  •  Perihelion Distance: 0.9339351095314381(AU)
  •  Aphelion Distance:1.877536903700616(AU)
  • Earth MOID (Earth center to NEO center):0.000146791 AU (0.057( LD)), (3.446 Earth radii)  or 13,645.076 miles ( 21,959.471 (KM))
  • Next Close-Approach to Earth:  Will safely pass Earth on 2017-Oct-12 at a 
    • Minimum Distance(Earth center to NEO center) of 0.000335152723175429(AU) (0.13(LD)), (7.8697 Earth radii) or 31,154.392 miles (50,138.134(KM)) 
    • Nominal Distance(Earth center to NEO center) of 0.000335252629744477(AU) (0.13(LD)), ( 7.8720 Earth radii) or 31,163.679 miles ( 50,153.08(KM))
    • Maximum Distance(Earth center to NEO center) of 0.000335352538623426(AU) (0.13 (LD)), (7.8744 Earth radii) or 31,172.966 miles (50,168.026(KM))   
  •  Goldstone Asteroid Schedule: Yes  2017 Oct ( Needs Astrometry: No Physical Observations Yes)