1912 Anubis

Last updated

1912 Anubis
001912-asteroid shape model (1912) Anubis.png
Modelled shape of Anubis from its lightcurve
Discovery [1]
Discovered by C. J. van Houten
I. van Houten-G.
Tom Gehrels
Discovery site Palomar Obs.
Discovery date24 September 1960
Designations
(1912) Anubis
Pronunciation /əˈnjbɪs/ [2]
Named after
Anubis (Egyptian deity) [3]
6534 P-L ·1938 DJ2
1943 DD ·1968 HQ
main-belt  · Koronis [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 74.27 yr (27,127 days)
Aphelion 3.1736 AU
Perihelion 2.6387 AU
2.9061 AU
Eccentricity 0.0920
4.95 yr (1,810 days)
154.97°
0° 11m 56.04s / day
Inclination 3.1576°
76.223°
2025-Jun-23
317.02°
Physical characteristics
Mean diameter
10.28  km (calculated) [4]
10.407±0.952 km [5]
4.626±0.001  h [4] [6]
4.628±0.0012 h [6]
0.24 (assumed) [4]
0.382±0.250 [5]
S [4]
11.406±0.001(R) [6]  ·11.57 [5]  ·11.8 [1]  ·12.11 [4]  ·12.20±0.19 [7]

    1912 Anubis (prov. designation: 6534 P-L) is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 10 kilometers (6.2 miles) in diameter. It was named after the Egyptian deity Anubis. [3]

    Contents

    Orbit and classification

    The S-type asteroid is a member of the Koronis family, a group consisting of about 200 known bodies. It orbits the Sun in the outer main-belt at a distance of 2.6–3.2  AU once every 4 years and 11 months (1,810 days). Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic. [1]

    Discovery

    Anubis was discovered on 24 September 1960, by the Dutch and Dutch–American astronomers Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels, who took the photographic plates at Palomar Observatory, California. [8] On the same night, the trio of astronomers also discovered 1923 Osiris, 1924 Horus and 5011 Ptah, also named after Ancient Egyptian deities.

    The survey designation "P-L" stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand minor planets. [9]

    Naming

    This minor planet was named after Anubis, the jackal-headed Egyptian god and protector of the dead. [3] The approved naming citation was published by the Minor Planet Center on 1 November 1979 ( M.P.C. 5013). [10]

    Physical characteristics

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Anubis measures 10.407 kilometers in diameter and its surface has an albedo of 0.382, [5] while the Collaborative Asteroid Lightcurve Link (CALL) assumes a standard albedo for stony members of the Koronis family of 0.24, and calculates a diameter of 10.28 kilometers with an absolute magnitude of 12.11. [4]

    In 2010 and 2012, two rotational lightcurves of Anubis were obtained from photometric observations at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 4.626 and 4.628 hours with a brightness amplitude of 0.47 and 0.18 magnitude, respectively ( U=2/2 ). [6] CALL adopts the shorter period of 4.626 hours. [4]

    Related Research Articles

    1810 Epimetheus, provisional designation 4196 P-L, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter.

    39382 Opportunity, also designated 2696 P-L, is a dark Hilidan asteroid from the outermost region of the asteroid belt, approximately 7.5 kilometers in diameter. Discovered during the Palomar–Leiden survey at Palomar Observatory in 1960, it was named for NASA's Opportunity Mars rover.

    10252 Heidigraf, provisional designation 4164 T-1, is a Koronian asteroid from the outer regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered during the Palomar–Leiden Trojan survey on 26 March 1971, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California, United States. The likely elongated S-type asteroid has a brightness variation of 0.56 magnitude. It was named after Heidi Graf, a former Head of the ESTEC Communications Office.

    <span class="mw-page-title-main">9999 Wiles</span> Koronian asteroid

    9999 Wiles, provisional designation 4196 T-2, is a Koronian asteroid from the outer region of the asteroid belt, approximately 6 to 7 kilometers in diameter. It was named after British mathematician Andrew Wiles.

    <span class="mw-page-title-main">9994 Grotius</span> Rafita asteroid

    9994 Grotius, provisional designation 4028 P-L, is a stony Rafita asteroid from the middle regions of the asteroid belt, approximately 3.5 kilometers in diameter. It was discovered during the Palomar–Leiden survey in 1960, and named after Dutch jurist Hugo Grotius.

    8967 Calandra, provisional designation 4878 T-1, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 13 May 1971, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden Observatory, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the Palomar Observatory in California. It is named after the corn bunting (Emberiza calandra).

    <span class="mw-page-title-main">9910 Vogelweide</span>

    9910 Vogelweide, provisional designation 3181 T-2, is a stony Koronian asteroid and elongated slow rotator from the outer regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered during the second Palomar–Leiden trojan survey in 1973, and named after German medieval poet Walther von der Vogelweide.

    <span class="mw-page-title-main">9905 Tiziano</span>

    9905 Tiziano, provisional designation 4611 P-L, is an asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. Discovered during the Palomar–Leiden survey in 1960, the asteroid was named after Italian Renaissance painter Titian.

    6805 Abstracta, provisional designation 4600 P-L, is a carbonaceous Themistian asteroid and slow rotator from the outer region of the asteroid belt, approximately 10 kilometers in diameter.

    8121 Altdorfer, provisional designation 2572 P-L, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 2 kilometers in diameter. Discovered during the Palomar–Leiden survey in 1960, the asteroid was later named for Renaissance painter Albrecht Altdorfer.

    Bacon, provisional designation 3042 P-L, is a carbonaceous Dorian asteroid from the central region of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 24 September 1960, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California, United States. It was later named after English philosopher and statesman Francis Bacon.

    5655 Barney, provisional designation 1159 T-2, is a Maria asteroid from the central regions of the asteroid belt, approximately 6.5 kilometers in diameter. It was discovered during the second Palomar–Leiden Trojan survey in 1973, and named for American astronomer Ida Barney in 1994. The stony S-type asteroid has a rotation period of 2.66 hours.

    9826 Ehrenfreund, provisional designation 2114 T-3, is a stony Eoan asteroid from the outer region of the asteroid belt, approximately 7 kilometers in diameter.

    3936 Elst, provisional designation 2321 T-3, is a stony Vestian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. The asteroid was discovered on 16 October 1977, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Dutch–American astronomer Tom Gehrels at Palomar Observatory in California, United States. It was named after Belgian astronomer Eric W. Elst.

    10660 Felixhormuth, provisional designation 4348 T-1, is a background asteroid from the outer regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 26 March 1971, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Dutch–American astronomer Tom Gehrels at Palomar Observatory in California, United States. The asteroid was named after German astronomer Felix Hormuth.

    1777 Gehrels, also designated 4007 P-L, is a stony asteroid from the middle region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered during the Palomar–Leiden survey in 1960, and named for astronomer Tom Gehrels, one of the survey's principal investigators and credited discoverer.

    10249 Harz, provisional designation 9515 P-L, is a background asteroid from the central regions of the asteroid belt, approximately 3.5 kilometers in diameter. It was discovered on 17 October 1960, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California, United States. The assumed S-type asteroid is likely elongated and has a short rotation period of 3.63 hours. It was named after the German mountain range Harz.

    1924 Horus, provisional designation 4023 P-L, is a dark asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. Discovered during the Palomar–Leiden survey in 1960, it was later named after Horus from Egyptian mythology.

    (1965) van de Kamp, provisional designation 2521 P-L, is a stony asteroid from the central region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 24 September 1960, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden Observatory, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the U.S Palomar Observatory, California. It was later named after Dutch astronomer Peter van de Kamp.

    1778 Alfvén, also designated 4506 P-L, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 20 kilometers in diameter.

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1912 Anubis (6534 P-L)". Jet Propulsion Laboratory. Archived from the original on 20 December 2016. Retrieved 1 July 2017.
    2. "Anubis". Lexico UK English Dictionary. Oxford University Press. Archived from the original on 21 March 2020.
    3. 1 2 3 Schmadel, Lutz D. (2007). "(1912) Anubis". Dictionary of Minor Planet Names – (1912) Anubis. Springer Berlin Heidelberg. p. 153. doi:10.1007/978-3-540-29925-7_1913. ISBN   978-3-540-00238-3.
    4. 1 2 3 4 5 6 7 8 "LCDB Data for (1912) Anubis". Asteroid Lightcurve Database (LCDB). Retrieved 10 December 2016.
    5. 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv: 1209.5794 . Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8 . Retrieved 10 December 2016.
    6. 1 2 3 4 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: 1504.04041 . Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75 . Retrieved 10 December 2016.
    7. Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv: 1506.00762 . Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007 . Retrieved 10 December 2016.
    8. "1912 Anubis (6534 P-L)". Minor Planet Center. Retrieved 10 December 2016.
    9. "Minor Planet Discoverers". Minor Planet Center. 24 April 2016. Retrieved 10 December 2016.
    10. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 December 2016.