2013 LX28

Last updated

2013 LX28
Discovery
Discovered by Pan-STARRS
Discovery date12 June 2013
Designations
2013 LX28
Orbital characteristics [2] [3] [4]
Epoch 13 January 2016 (JD  2457400.5)
Uncertainty parameter 1
Aphelion 1.4543719  AU (217.57094  Gm)
Perihelion 0.5488609 AU (82.10842 Gm)
1.00161641 AU (149.839682 Gm)
Eccentricity 0.4520249
1.00  yr (366.14  d)
61.458811°
0° 58m 59.602s /day
Inclination 49.97420°
76.679354°
345.77666°
Earth  MOID 0.373137 AU (55.8205 Gm)
Jupiter  MOID 3.8786 AU (580.23 Gm)
Physical characteristics
Dimensions130–300 m [a] [5]
21.7 [2]

    2013 LX28, is an asteroid, classified as near-Earth object of the Apollo group that is a temporary quasi-satellite of the Earth, the third known Earth quasi-satellite. [6] [7]

    Contents

    Discovery, orbit and physical properties

    2013 LX28 was discovered on 12 June 2013. As of September 2014, it has been observed 26 times with a data-arc span of 349 days. It is an Apollo asteroid and its semi-major axis (1.0016 AU) is very similar to that of the Earth but it has relatively high eccentricity (0.4521) and high orbital inclination (49.9761°). With an absolute magnitude of 21.7, it has a diameter in the range 130–300 m (for an assumed albedo range of 0.04–0.20).

    Quasi-satellite dynamical state and orbital evolution

    2013 LX28 has been identified as an Earth quasi-satellite following a kidney-shaped retrograde orbit around the Earth. [6] [7]

    See also

    Notes

    Related Research Articles

    <span class="mw-page-title-main">Near-Earth object</span> Small Solar System body with an orbit that can bring it close to Earth

    A near-Earth object (NEO) is any small Solar System body orbiting the Sun whose closest approach to the Sun (perihelion) is less than 1.3 times the Earth–Sun distance. This definition applies to the object's orbit around the Sun, rather than its current position, thus an object with such an orbit is considered an NEO even at times when it is far from making a close approach of Earth. If an NEO's orbit crosses the Earth's orbit, and the object is larger than 140 meters (460 ft) across, it is considered a potentially hazardous object (PHO). Most known PHOs and NEOs are asteroids, but about 0.35% are comets.

    2003 YN107 is a tiny asteroid, classified as a near-Earth object of the Aten group moving in a 1:1 mean-motion resonance with Earth. Because of that, it is in a co-orbital configuration relative to Earth.

    <span class="mw-page-title-main">Atira asteroid</span> Group of near-Earth asteroids

    Atira asteroids or Apohele asteroids, also known as interior-Earth objects (IEOs), are Near-Earth objects whose orbits are entirely confined within Earth's orbit; that is, their orbit has an aphelion smaller than Earth's perihelion, which is 0.983 astronomical units (AU). Atira asteroids are by far the least numerous group of near-Earth objects, compared to the more populous Aten, Apollo and Amor asteroids.

    <span class="mw-page-title-main">Quasi-satellite</span> Type of satellite in sync with another orbit

    A quasi-satellite is an object in a specific type of co-orbital configuration with a planet where the object stays close to that planet over many orbital periods.

    <span class="mw-page-title-main">524522 Zoozve</span> Temporary quasi-satellite of Venus

    524522 Zoozve (provisional designation 2002 VE68) is a sub-kilometer sized asteroid and temporary quasi-moon of Venus. Discovered in 2002, it was the first such object to be discovered around a major planet in the Solar System. It has nearly the same orbital period around the Sun that Venus does. In a frame of reference rotating with Venus, it appears to travel around it during one Venerean year, but it orbits the Sun, not Venus.

    In astronomy, a co-orbital configuration is a configuration of two or more astronomical objects orbiting at the same, or very similar, distance from their primary; i.e., they are in a 1:1 mean-motion resonance..

    (322756) 2001 CK32 is a sub-kilometer asteroid and near-Earth object of the Aten group. It is also a transient Venus co-orbital, and a Mercury grazer as well as an Earth crosser. It was once designated as a potentially hazardous asteroid.

    2012 XE133 is an asteroid, classified as near-Earth object of the Aten group that is a temporary co-orbital of Venus.

    2013 BS45 (also written 2013 BS45) is a horseshoe companion to the Earth like 3753 Cruithne. Like Cruithne, it does not orbit the Earth in the normal sense and at times it is on the other side of the Sun, yet it still periodically comes nearer to the Earth in sort of halo orbit before again drifting away. While not a traditional natural satellite, it does not quite have normal heliocentric orbit either and these are sometimes called quasi-satellties or horseshoe orbits.

    2012 FC71, also written 2012 FC71, is a small asteroid trapped in a Kozai resonance with the Earth.

    2011 EO40 is an asteroid, classified as a near-Earth object and a potentially hazardous asteroid of the Apollo group. It is a possible candidate for the parent body of the Chelyabinsk superbolide.

    2013 ND15 (also written 2013 ND15) is an asteroid that is a temporary trojan of Venus, the first known Venus trojan.

    2014 OL339 (also written 2014 OL339) is an Aten asteroid that is a temporary quasi-satellite of Earth, the fourth known Earth quasi-satellite.

    2015 SO2 (also written 2015 SO2) is an Aten asteroid that is a temporary horseshoe companion to the Earth, the ninth known Earth horseshoe librator. Prior to its most recent close encounter with our planet (2015 September 30) it was an Apollo asteroid.

    2015 XX169 (also written 2015 XX169) is an Apollo asteroid that is a temporary horseshoe companion to the Earth, the tenth known Earth horseshoe librator. A close encounter with the Earth on 14 December 2015 caused the value of the semi-major axis of 2015 XX169 to drift slowly upwards, and the object evolved from an Aten asteroid to an Apollo asteroid about a year after this close approach.

    2015 YQ1 (also written 2015 YQ1) is an Apollo asteroid that is a temporary horseshoe companion to the Earth, the twelfth known Earth horseshoe librator. It experienced a close encounter with the Earth on 2015 December 22 at 0.0037 AU.

    2015 YA is a sub-kilometer asteroid, classified as near-Earth object of the Aten group, that is a temporary horseshoe companion to the Earth. It is the 11th known Earth horseshoe librator. Prior to a close encounter with the Earth on 15 December 2015, 2015 YA was an Apollo asteroid.

    2020 VT1 is a small asteroid, classified as a near-Earth object of the Amor group, that is a temporary horseshoe companion to Mars.

    2020 PN1 is a sub-kilometer asteroid, classified as a near-Earth object of the Aten group, that is a temporary horseshoe companion to the Earth. There are dozens of known Earth horseshoe librators, some of which switch periodically between the quasi-satellite and the horseshoe co-orbital states.

    2020 PP1 is a sub-kilometer asteroid, classified as a near-Earth object of the Apollo group, that is a temporary quasi-satellite of the Earth. There are over a dozen known Earth quasi-satellites, some of which switch periodically between the quasi-satellite and horseshoe co-orbital states.

    References

    1. "List Of Apollo Minor Planets (by designation)". Minorplanetcenter.org. Retrieved 24 December 2014.
    2. 1 2 3 "2013 LX28". JPL Small-Body Database . Jet Propulsion Laboratory. SPK-ID:  3643996 . Retrieved 3 April 2016.
    3. "AstDyS". NEODyS . Retrieved 24 December 2014.
    4. "NEODyS". NEODyS . Retrieved 24 December 2014.
    5. "Glossary: Absolute Magnitude (H)". Neo.jpl.nasa.gov. Archived from the original on 2 March 2001. Retrieved 24 December 2014.
    6. 1 2 Connors, M. (2014). "A Kozai-resonating Earth quasi-satellite". Monthly Notices of the Royal Astronomical Society . 437 (1): L85–L89. Bibcode:2014MNRAS.437L..85C. doi: 10.1093/mnrasl/slt147 .
    7. 1 2 de la Fuente Marcos, C.; de la Fuente Marcos, R. (2014). "Asteroid 2014 OL339: yet another Earth quasi-satellite". Monthly Notices of the Royal Astronomical Society . 445 (3): 2985–2994. arXiv: 1409.5588 . Bibcode:2014MNRAS.445.2961D. doi: 10.1093/mnras/stu1978 .
    Further reading