(214869) 2007 PA8

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(214869) 2007 PA8
Pa8radar.jpg
Goldstone radar image of 2007 PA8 during its 2012 close approach
Discovery [1]
Discovered by LINEAR
Discovery site Lincoln Lab's ETS
Discovery date 9 August 2007
Designations
MPC designation (214869) 2007 PA8
2007 PA8
Apollo · NEO · PHA[1][2]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 10.83 yr (3,957 days)
Aphelion 4.6931 AU
Perihelion 0.9571 AU
2.8251 AU
Eccentricity 0.6612
4.75 yr (1,734 days)
1.4149°
0° 12m 27.36s / day
Inclination 1.9841°
142.63°
292.33°
Earth MOID 0.0246 AU · 9.6 LD
Jupiter MOID 0.6318 AU
Physical characteristics
Dimensions 1.35±0.07 km[3]
1.38 km (calculated)[4]
1.4±0.2 km[5]
85±12 h[4]
95±5 h[6]
101.209 h[1]
101.325±1.2659 h[7]
102.24±0.48 h[3]
0.20 (assumed)[4]
0.29±0.08[5]
0.29±0.14[3]
C[6] · Q[5] · S[4]
B–V = 0.765±0.022[4]
V–R = 0.415±0.011[4]
V–I = 0.741±0.015[4]
16.2[5] · 16.216±0.002 (R)[7] · 16.30±0.52[3] · 16.4[1] · 16.47[6] · 16.67[4]

(214869) 2007 PA8 is an asteroid and slow rotator, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.4 kilometers in diameter.

It came within 6.5 million km (4 million miles, 17 lunar distances) of Earth on November 5, 2012.[8][9]

It was discovered on 9 August 2007, by the Lincoln Near-Earth Asteroid Research team (LINEAR) at the U.S. Lincoln Laboratory Experimental Test Site in Socorro, New Mexico.[2]

It was studied by the 70-meter (230 ft) Goldstone Deep Space Network antenna as it came near Earth, which resulted in radar images and other data about the asteroid, such as its very long rotation period of approximately 100 hours.[9]

2007 PA8 may be a dormant comet related to the November γ Pegasids meteor shower.[10]

See also[edit]

References[edit]

  1. ^ a b c d e "JPL Small-Body Database Browser: 214869 (2007 PA8)" (2013-05-13 last obs.). Jet Propulsion Laboratory. Retrieved 1 June 2017. 
  2. ^ a b "214869 (2007 PA8)". Minor Planet Center. Retrieved 26 April 2017. 
  3. ^ a b c d Brozovic, Marina; Benner, Lance A. M.; Magri, Christopher; Scheeres, Daniel J.; Busch, Michael W.; Giorgini, Jon D.; et al. (April 2017). "Goldstone radar evidence for short-axis mode non-principal-axis rotation of near-Earth asteroid (214869) 2007 PA8". Icarus. 286: 314–329. Bibcode:2017Icar..286..314B. doi:10.1016/j.icarus.2016.10.016. Retrieved 26 April 2017. 
  4. ^ a b c d e f g h "LCDB Data for (214869)". Asteroid Lightcurve Database (LCDB). Retrieved 26 April 2017. 
  5. ^ a b c d Fornasier, S.; Belskaya, I. N.; Perna, D. (April 2015). "The potentially hazardous Asteroid (214869) 2007 PA8: An unweathered L chondrite analog surface". Icarus. 250: 280–286. Bibcode:2015Icar..250..280F. doi:10.1016/j.icarus.2014.12.015. Retrieved 26 April 2017. 
  6. ^ a b c Hicks, M.; Brewer, M.; Somers, J. (December 2012). "Broadband Photometry of 214869 (2007 PA8): A Slowly Rotating Potentially Hazardous Asteroid". The Astronomer's Telegram (4625). Bibcode:2012ATel.4625....1H. Retrieved 26 April 2017. 
  7. ^ a b Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 26 April 2017. 
  8. ^ Say Hello to Asteroid 2007 PA8 (Universe Today)
  9. ^ a b (214869) 2007 PA8 Goldstone Radar Observations Planning
  10. ^ Rudawska, Regina; Jenniskens, Peter (2014). "New meteor showers identified in the CAMS and SonotaCo meteoroid orbit surveys". Proceedings of the Meteoroids 2013 Conference Aug. 26-30, 2013, A.M. University, Poznan, Poland: 217. arXiv:1405.1769Freely accessible. Bibcode:2014me13.conf..217R. 

External links[edit]