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298 Baptistina

From Wikipedia, the free encyclopedia
Main-belt asteroid

298 Baptistina
Asteroid 298 Baptistina (apparent magnitude 15.2) near a mag 15.3 star
Discovery
Discovered byAuguste Charlois
Discovery siteNice, France
Discovery date9 September 1890
Designations
(298) Baptistina
A890 RB
Orbital characteristics[1]
Epoch 21 November 2025 (JD 2461000.5)
Uncertainty parameter 0
Observation arc123.99 years
Aphelion2.049 AU
Perihelion2.049 AU
2.264 AU
Eccentricity0.09513
3.407 years
113.57°
0° 17m 21.588s / day
Inclination6.279°
8.112°
134.99°
Earth MOID1.065 AU
Jupiter MOID2.525 AU
TJupiter3.604
Physical characteristics[1]
Dimensions13–30 km (8.1–18.6 mi)[2][3]
16.23±0.02 hours[3]
0.131
X-type
11.2

Baptistina (minor planet designation:298 Baptistina) is anasteroid orbiting in theasteroid belt. It is the namesake of theBaptistina family. It was discovered on 9 September 1890 byAuguste Charlois ofNice. The source of its name is unknown.[4] It measures about 13–30 km (8.1–18.6 mi) in diameter. Although it has an orbit similar to theFlora family asteroids,[5] It was once considered a possible source of the impactor that caused the extinction of the dinosaurs,[6] a possibility ruled out by theWide-field Infrared Survey Explorer (WISE) in 2011.[7]

See also

[edit]
Orbit of Baptistina

References

[edit]
  1. ^ab"298 Baptistina – JPL Small-Body Database Lookup".ssd.jpl.nasa.gov.Jet Propulsion Laboratory. Retrieved11 May 2016.
  2. ^V. Reddy; M. S. P. Kelley; J. P. Emery; et al. (14–18 July 2008).Composition of 298 Baptistina: Implications for K–T Impactor Link(PDF). Asteroids, Comets, Meteors. Vol. 1405. Baltimore, Maryland.
  3. ^abD. J. Majaess; D. Higgins; L. A. Molnar (2008)."New Constraints on the Asteroid 298 Baptistina, the Alleged Family Member of the K/T Impactor".Journal of the Royal Astronomical Society of Canada.103 (1):7–10.arXiv:0811.0171.Bibcode:2009JRASC.103....7M.doi:10.48550/arXiv.0811.0171.
  4. ^L. D. Schmadel (2003).Dictionary of Minor Planet Names. Springer Science & Business Media. p. 41.ISBN 978-3-540-00238-3.
  5. ^M. Florczak; M. A. Barucci; A. Doressoundiram; et al. (1998). "A Visible Spectroscopic Survey of the Flora Clan".Icarus.133 (2):233–246.Bibcode:1998Icar..133..233F.doi:10.1006/icar.1998.5928.
  6. ^W. F. Bottke; D. Vokrouhlický; D. Nesvorný (2007). "An asteroid breakup 160 Myr ago as the probable source of the K/T impactor".Nature.449 (7158):48–53.Bibcode:2007Natur.449...48B.doi:10.1038/nature06070.
  7. ^V. Reddy; J. M. Carvano; D. Lazarro; et al. (2011). "Mineralogical characterization of Baptistina Asteroid Family: Implications for K/T impactor source".Icarus.216 (1).arXiv:1110.3414.Bibcode:2011Icar..216..184R.doi:10.1016/j.icarus.2011.08.027.

External links

[edit]
Minor planets
Asteroid
Distant minor planet
Comets
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