869 Mellena

Last updated

869 Mellena
Discovery  [1]
Discovered by R. Schorr
Discovery site Bergedorf Obs.
Discovery date9 May 1917
Designations
(869) Mellena
Named after
 Werner von Melle
(mayor of Hamburg) [2]
A917 JB ·1931 RC
1944 OB ·1952 DL2
1917 BV
main-belt   [1] [3]  ·(middle)
background   [4] [5]
Orbital characteristics   [3]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc 102.66 yr (37,496 d)
Aphelion 3.2807 AU
Perihelion 2.0966 AU
2.6887 AU
Eccentricity 0.2202
4.41 yr (1,610 d)
90.376°
0° 13m 24.96s / day
Inclination 7.8385°
154.88°
107.09°
Physical characteristics
  • 18.45±0.32  km [6]
  • 18.52±0.8 km [7]
  • 21.193±0.090 km [8]
6.5155±0.0005  h [9]
  • 0.0565±0.005 [7]
  • 0.057±0.022 [8]
  • 0.058±0.002 [6]
11.9 [1] [3]

    869 Mellena ( prov. designation:A917 JBor1917 BV) is a dark background asteroid from the central region of the asteroid belt. It was discovered on 9 May 1917, by astronomer Richard Schorr at the Bergedorf Observatory in Hamburg. [1] The carbonaceous C-type asteroid has a shorter than average rotation period of 6.5 hours and measures approximately 19 kilometers (12 miles) in diameter. It was named after Werner von Melle (1853–1937), mayor of Hamburg, who founded the discovering observatory. [2]

    Contents

    Orbit and classification

    Mellena is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. [4] [5] It orbits the Sun in the central asteroid belt at a distance of 2.1–3.3  AU once every 4 years and 5 months (1,610 days; semi-major axis of 2.69 AU). Its orbit has an eccentricity of 0.22 and an inclination of 8° with respect to the ecliptic. [3]

    Discovery

    Mellena was discovered by German astronomer Richard Schorr at the Bergedorf Observatory in Hamburg on 9 May 1917. [1] On the following night, it was independently discovered by Max Wolf at Heidelberg Observatory on 10 May 1917. [2] The Minor Planet Center, however, only credits the first discoverer. Schorr only discovered one more asteroid, 1240 Centenaria, and was honored with the naming of Mars-crosser 1235 Schorria, discovered by Wolf. Mellena's observation arc begins at Algiers Observatory in Northern Africa on 26 March 1930, almost 13 years after its official discovery observation at Bergedorf. [1]

    Naming

    This minor planet was named after Werner von Melle (1853–1937), who was the mayor of Hamburg, Germany, in 1915 and during 1918–1919. He promoted the establishment of the University of Hamburg and founded the Bergedorf–Hamburg Observatory where this minor planet was discovered. The naming was also mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 85 ). [2]

    Physical characteristics

    In both the Tholen- and SMASS-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2) as well as in the SDSS-based taxonomy, Mellena is a common, carbonaceous C-type asteroid. [5] [10] [11]

    Rotation period

    In May 2010, a rotational lightcurve of Mellena was obtained from photometric observations by Robert Stephens at the Santana ( 646 ) and GMARS ( G79 ) observatories in California. Lightcurve analysis gave a well-defined rotation period of 6.5155±0.0005 hours with a brightness variation of 0.27±0.03 magnitude ( U=3 ). [9] Subsequent observations were taken by Andrea Ferrero at the Bigmuskie Observatory ( B88 ) in Mombercelli, Italy ( U=2 ), [12] and Larry Owings at the Barnes Ridge Observatory in California in June 2010 ( U=3 ), [13] as well as by Albino Carbognani Astronomical at the OAVdA Observatory ( B04 ) in July 2010 ( U=3− ). [14] These observations gave a concurring period of (6.510±0.003), (6.510±0.001) and (6.515±0.001) hours with an amplitude of (0.25±0.02), (0.20±0.02) and (0.26±0.03) magnitude, respectively. [12]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite, the Infrared Astronomical Satellite IRAS, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Mellena measures (18.45±0.32), (18.52±0.8) and (21.193±0.090) kilometers in diameter and its surface has an albedo of (0.058±0.002), (0.0565±0.005) and (0.057±0.022), respectively. [6] [7] [8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0884 and a diameter of 18.64 kilometers based on an absolute magnitude of 11.9. [12] Alternative mean diameter measurements published by the WISE team include (15.23±3.47 km), (16.39±3.30 km), (17.77±0.46 km) and (21.953±0.153 km) with corresponding albedos of (0.12±0.17), (0.09±0.04), (0.065±0.009) and (0.0377±0.0020). [5] [12]

    Related Research Articles

    734 Benda is a large background asteroid from the outer regions of the asteroid belt, approximately 70 kilometers in diameter. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 11 October 1912. For its size, the dark X-type asteroid has a relatively short rotation period of 7.1 hours. It was named after the discoverer's wife, Anna Benda.

    862 Franzia is a stony background asteroid from the central regions of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 28 January 1917. The common S-type asteroid has a rotation period of 7.5 hours and measures approximately 28 kilometers in diameter. It was named after the discoverer's son, Franz Wolf.

    865 Zubaida is an elongated, stony background asteroid from the inner regions of the asteroid belt. It was discovered on 15 February 1917, by astronomer Max Wolf at the Heidelberg Observatory in southwest Germany, and given the provisional designations A917 CH and 1917 BO. The uncommon L-type asteroid has a rotation period of 11.4 hours and measures approximately 17 kilometers in diameter. It was named after Zobeide, a character in the opera Abu Hassan by Carl Maria von Weber (1786–1826).

    <span class="mw-page-title-main">868 Lova</span> Large and dark background asteroid

    868 Lova is a large and dark background asteroid, approximately 51 kilometers in diameter, from the central regions of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 26 April 1917. The carbonaceous C-type asteroid (Ch) and has a long rotation period of 41.1 hours and is likely elongated in shape. The origin of the asteroid's name remains unknown.

    <span class="mw-page-title-main">870 Manto</span>

    870 Manto is a stony background asteroid and slow rotator from the inner region of the asteroid belt. It was discovered on 12 May 1917, by astronomer Max Wolf at the Heidelberg Observatory in southwest Germany. The likely heavily elongated S-type asteroid has a long rotation period of 122.3 hours and measures approximately 13 kilometers in diameter. It was named after Manto, a prophetess in Greek mythology.

    <span class="mw-page-title-main">874 Rotraut</span> Dark and elongated background asteroid

    874 Rotraut is a dark and elongated background asteroid, approximately 58 kilometers in diameter, located in the outer region of the asteroid belt. It was discovered on 25 May 1917, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory is southwest Germany. The hydrated carbonaceous C-type asteroid (Ch) has a rotation period of 14.3 hours. It was likely named after the ballad Schön Rotraut by German lyric poet Eduard Mörike (1804–1875).

    <span class="mw-page-title-main">873 Mechthild</span>

    873 Mechthild is a dark background asteroid from the central regions of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg Observatory on 21 May 1917. The primitive P-type asteroid has a rotation period of 11.0 hours and measures approximately 34 kilometers in diameter. The origin of the asteroid's name remains unknown.

    <span class="mw-page-title-main">882 Swetlana</span> Dark background asteroid

    882 Swetlana is a dark background asteroid from the outer region of the asteroid belt. It was discovered on 15 August 1917, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The X-type asteroid has a longer-than average rotation period of 29.9 hours and measures approximately 42 kilometers in diameter. The origin of the asteroid's name remains unknown.

    959 Arne is a background asteroid and slow rotator, approximately 52 kilometers in diameter, located in the outer region of the asteroid belt. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 30 September 1921. The X-type asteroid has an exceptionally long rotation period of 123.7 hours. It was named after Arne Asplind, son of Swedish astronomer Bror Asplind (1890–1954).

    977 Philippa is a large background asteroid from the outer regions of the asteroid belt, approximately 65 kilometers in diameter. It was discovered on 6 April 1922, by Russian–French astronomer Benjamin Jekhowsky at the Algiers Observatory in Northern Africa. The C-type asteroid is likely irregular in shape and has a rotation period of 15.4 hours. It was named after French financier Baron Philippe de Rothschild (1902–1988).

    <span class="mw-page-title-main">979 Ilsewa</span> Background asteroid

    979 Ilsewa is a background asteroid from the outer regions of the asteroid belt, approximately 36 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 29 June 1922. The uncommon T-type asteroid has a longer-than average rotation period of 42.6 hours. It was named after Ilse Walldorf, an acquaintance of the discoverer.

    989 Schwassmannia is a stony background asteroid and a slow rotator from the central regions of the asteroid belt, approximately 12.5 kilometers in diameter. It was discovered on 18 November 1922, by astronomer Friedrich Karl Arnold Schwassmann at the Bergedorf Observatory in Hamburg, Germany. The bright S/T-type asteroid has a long rotation period of 107.9 hours. It was named after the discoverer himself.

    1164 Kobolda, provisional designation 1930 FB, is a stony Phocaea asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. Discovered by Karl Reinmuth at Heidelberg Observatory in 1930, the asteroid was later named after German astronomer Hermann Kobold.

    1240 Centenaria, provisional designation 1932 CD, is a background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. It was discovered on 5 February 1932, by astronomer Richard Schorr at the Bergedorf Observatory in Hamburg, Germany. The assumed C-type asteroid has a rotation period of 11.3 hours. It was named for the 100th anniversary of the discovering observatory.

    1177 Gonnessia, provisional designation 1930 WA, is a dark background asteroid from the outer regions of the asteroid belt, approximately 99 kilometers in diameter. It was discovered on 24 November 1930, by French astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa, and named after astronomer François Gonnessiat.

    3793 Leonteus is a large Jupiter trojan from the Greek camp, approximately 90 kilometers in diameter. It was discovered on 11 October 1985, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California, United States. The D-type Jovian asteroid belongs to the 30 largest Jupiter trojans and has a rotation period of 5.6 hours. It was named after the hero Leonteus from Greek mythology.

    1303 Luthera, provisional designation 1928 FP, is a dark asteroid and the parent body of the Luthera family, located in the outermost regions of the asteroid belt. It measures approximately 90 kilometers in diameter. The asteroid was discovered on 16 March 1928, by astronomer Friedrich Schwassmann at the Bergedorf Observatory in Hamburg, Germany, and later named after German astronomer Robert Luther.

    1235 Schorria, is a Hungaria asteroid, sizable Mars-crosser, and exceptionally slow rotator from the inner region of the asteroid belt. The carbonaceous C-type asteroid has an outstandingly long rotation period of 1265 hours and measures approximately 5.5 kilometers kilometers in diameter. It was discovered by Karl Reinmuth at Heidelberg Observatory in southwest Germany on 18 October 1931, and named after German astronomer Richard Schorr (1867–1951).

    <span class="mw-page-title-main">1276 Ucclia</span>

    1276 Ucclia is a carbonaceous Alauda asteroid from the outer region of the asteroid belt, approximately 31 kilometers in diameter. It was discovered on 24 January 1933 by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. Two nights later, the body was independently discovered by Richard Schorr at Bergedorf Observatory in Hamburg, Germany. It was named for the Belgium city of Uccle and its discovering observatory.

    1341 Edmée, provisional designation 1935 BA, is a rare-type metallic asteroid from the central region of the asteroid belt, approximately 27 kilometers in diameter.

    References

    1. 1 2 3 4 5 6 "869 Mellena (A917 JB)". Minor Planet Center. Retrieved 3 March 2020.
    2. 1 2 3 4 Schmadel, Lutz D. (2007). "(869) Mellena". Dictionary of Minor Planet Names . Springer Berlin Heidelberg. p.  79. doi:10.1007/978-3-540-29925-7_870. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 "JPL Small-Body Database Browser: 869 Mellena (A917 JB)" (2020-01-06 last obs.). Jet Propulsion Laboratory . Retrieved 3 March 2020.
    4. 1 2 "Asteroid 869 Mellena – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 3 March 2020.
    5. 1 2 3 4 "Asteroid 869 Mellena". Small Bodies Data Ferret. Retrieved 3 March 2020.
    6. 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi: 10.1093/pasj/63.5.1117 . (online, AcuA catalog p. 153)
    7. 1 2 3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T . Retrieved 3 March 2020.
    8. 1 2 3 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv: 1406.6645 . Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121.
    9. 1 2 Stephens, Robert D. (October 2010). "Asteroids Observed from GMARS and Santana Observatories: 2010 April - June" (PDF). Minor Planet Bulletin. 37 (4): 159–161. Bibcode:2010MPBu...37..159S. ISSN   1052-8091.
    10. 1 2 Lazzaro, D.; Angeli, C. A.; Carvano, J. M.; Mothé-Diniz, T.; Duffard, R.; Florczak, M. (November 2004). "S3OS2: the visible spectroscopic survey of 820 asteroids" (PDF). Icarus. 172 (1): 179–220. Bibcode:2004Icar..172..179L. doi:10.1016/j.icarus.2004.06.006 . Retrieved 3 March 2020.
    11. 1 2 Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics. 510: 12. Bibcode:2010A&A...510A..43C. doi: 10.1051/0004-6361/200913322 . Retrieved 3 March 2020. (PDS data set)
    12. 1 2 3 4 "LCDB Data for (869) Mellena". Asteroid Lightcurve Database (LCDB). Retrieved 3 March 2020.
    13. ↑ Owings, Larry E. (January 2011). "Lightcurves for 869 Mellena, 2375 Radek, and (19261) 1995 MB" (PDF). Minor Planet Bulletin. 38 (1): 9–10. Bibcode:2011MPBu...38....9O. ISSN   1052-8091.
    14. ↑ Carbognani, Albino (January 2011). "Lightcurves and Periods of Eighteen NEAs and MBAs" (PDF). Minor Planet Bulletin. 38 (1): 57–63. Bibcode:2011MPBu...38...57C. ISSN   1052-8091.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.