719 Albert

Last updated

719 Albert
Discovery  [1]
Discovered by J. Palisa
Discovery site Vienna Obs.
Discovery date3 October 1911
Designations
(719) Albert
Named after
 Albert Salomon Anselm von Rothschild   [2]
(Austrian banker)
1911 MT ·2000 JW8
NEO  · Amor   [1] [3]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 105.57 yr (38,560 days)
Aphelion 4.0830 AU
Perihelion 1.1964 AU
2.6397 AU
Eccentricity 0.5468
4.29 yr (1,567 days)
270.46°
0° 13m 47.28s / day
Inclination 11.574°
183.92°
156.12°
Earth  MOID 0.2030 AU ·79.1 LD
Physical characteristics
Dimensions2.36 km (calculated) [4]
5.8007±0.0003 h [5]
5.801 h [4]
5.8011±0.0034 h [lower-alpha 1]
5.8012±0.0034 h [lower-alpha 1]
5.802 h [6]
15.577±0.005 h [lower-alpha 2]
0.12 [6]
0.15 (assumed) [7]
0.20 (assumed) [4]
SMASS = S   [1]  · S   [4] [8] [9]  · X   [10]
B–V = 0.855±0.023 [9]
V–R = 0.491±0.012 [9]
V–I = 0.870±0.013 [9]
15.00 [10]  ·15.5 [1] [4]  ·15.57±0.17 [11]

    719 Albert, provisional designation 1911 MT, is a stony asteroid, approximately 2.5 kilometers in diameter, classified as a near-Earth object of the Amor group of asteroids. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 3 October 1911, [3] and subsequently a lost minor planet for 89 years. The asteroid was named in memory of Albert Salomon Anselm von Rothschild, an Austrian philanthropist and banker. [2] Albert was the second Amor asteroid discovered, the first being 433 Eros.

    Contents

    Orbit and classification

    Albert orbits the Sun at a distance of 1.2–4.1  AU once every 4 years and 3 months (1,567 days). Its orbit has an eccentricity of 0.55 and an inclination of 12° with respect to the ecliptic. [1] The asteroid's first observation is a precovery taken in September 1911 at Heidelberg Observatory, two weeks prior to its discovery at Vienna. The body's observation arc begins the night following its official discovery observation. [3] Albert is also a Mars-crossing asteroid.

    Close approaches

    The asteroid has a minimum orbital intersection distance with Earth of 0.2030 AU (30,400,000 km), which translates into 79.1 lunar distances. [1] On 8 September 1911, shortly before its discovery, it made its closest approach at 0.2054 AU (30,700,000 km). After another close encounter in 1941, Albert will not approach Earth to a similar distance until 2078. [1]

    Discovery

    Discovered in 1911 by Johann Palisa, Albert was named after one of the Imperial Observatory in Vienna's major benefactors, Albert Salomon von Rothschild, who had died some months before. [12] Due to inaccuracies in the asteroid's computed orbit it was subsequently lost and not recovered until 2000 by Jeffrey Larsen using data from the Spacewatch asteroid survey project. [12] Prior to being recovered in 2000, Albert was the last "lost asteroid" among those assigned numbers (69230 Hermes was not numbered until 2003). The second-to-last "lost" numbered asteroid, 878 Mildred, had been recovered in 1991. [12]

    When it was rediscovered, Albert was mistakenly thought to be a new asteroid and was designated 2000 JW8. [13] Upon further investigation, however, it was noticed that its orbital plane matched up nicely with the last remaining "lost" asteroid and it was properly identified. Using the new observational data, the period was determined to be about 4.28 years instead of the 4.1 years calculated in 1911; this discrepancy was the primary reason the asteroid was lost. [12]

    ...asteroids were sometimes assigned numbers before accurate orbital elements had been determined, and so some numbered asteroids could not later be located. These objects were referred to as “lost” asteroids. The final lost numbered asteroid, (719) Albert, was recovered in 2000 after a lapse of 89 years. Many newly discovered asteroids still become “lost” ...

    — Encyclopædia Britannica [14]

    Physical properties

    In the SMASS classification, Albert is a common stony S-type asteroid. [1] Others also characterized it as a stony asteroid, [8] [9] while a study using Sloan photometry considers it to be an X-type asteroid. [10]

    Most of what is known about 719 Albert comes from observations taken after its rediscovery. In 2001 it passed near the Earth, allowing for a series of observations at differing phase angles. During this pass its rotational period was calculated at 5.802 hours and a measured absolute magnitude of 15.43 together with an assumed albedo of 0.12 gave a diameter of 2.8 km. [6] Another group led by R. P. Binzel measured an absolute magnitude of 15.8; they however used an assumed albedo of 0.15 leading to a calculated diameter of 2.4 km. [7]

    The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 2.36 kilometers based on an absolute magnitude of 15.5. [4]

    Notes

    1. 1 2 Pravec (2001) web: rotation period for (719) Albert of 5.8011±0.0034 and 5.8012±0.0034 hours with a brightness amplitude of 0.74 and 079 mag, respectively. Quality code of 3 (both). Summary figures at the LCDB and Ondrejov Asteroid Photometry Project, see data sheet .
    2. ↑ Garlitz (2009): rotation period for (719) Albert of 15.577±0.005 hours with a brightness amplitude of 0.25±0.02 mag. Quality code of 2. Summary figures at the LCDB

    Related Research Articles

    <span class="mw-page-title-main">2985 Shakespeare</span>

    2985 Shakespeare (prov. designation: 1983 TV1) is a stony Koronian asteroid from the outer region of the asteroid belt. It was discovered on 12 October 1983, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona, and later named after William Shakespeare. The presumed S-type asteroid has a rotation period of 6.1 hours and measures approximately 10 kilometers (6.2 miles) in diameter.

    2159 Kukkamäki, provisional designation 1941 UX, is a stony asteroid from the inner region of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 16 October 1941, by Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland. It was later named after Finnish geodesist Tauno Kukkamäki.

    <span class="mw-page-title-main">4923 Clarke</span> Asteroid

    4923 Clarke, provisional designation 1981 EO27, is a stony background asteroid from the inner regions of the asteroid belt, approximately 3.5 kilometers (2.2 miles) in diameter. It was discovered on 2 March 1981, by American astronomer Schelte Bus at the Siding Spring Observatory in Australia. The spheroidal S-type asteroid has a rotation period of 3.14 hours. It was named after British science fiction writer Arthur C. Clarke. On the same night, Schelte Bus also discovered 5020 Asimov.

    716 Berkeley is a background asteroid from the central regions of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 30 July 1911. The stony S-type asteroid has a rotation period of 15.6 hours and measures approximately 21 kilometers in diameter. It was named after the city of Berkeley, California, where the discoverer's colleague Armin Otto Leuschner (1868–1953) was the director of the local observatory.

    985 Rosina, provisional designation 1922 MO, is a stony asteroid and sizable Mars-crosser on an eccentric orbit from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 14 October 1922, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid's name is a common German female name, unrelated to the discoverer's contemporaries.

    1131 Porzia, provisional designation 1929 RO, is a stony asteroid and sizable Mars-crosser from the innermost regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 10 September 1929, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The asteroid was named after Porcia wife of Brutus, who assassinated Julius Caesar.

    (9992) 1997 TG19 is a stony asteroid and eccentric Mars-crosser, approximately 4 kilometers in diameter. It was discovered on 8 October 1997, by Japanese astronomers Tetsuo Kagawa and Takeshi Urata at Gekko Observatory near Shizuoka, Japan.

    2873 Binzel, provisional designation 1982 FR, is a stony Florian asteroid and binary system from the inner regions of the asteroid belt, approximately 6.5 kilometers in diameter. It was discovered on 28 March 1982, by American astronomer Edward Bowell at the Anderson Mesa Station in Flagstaff, Arizona. The asteroid was named after astronomer Richard Binzel. Its 1.6-kilometer minor-planet moon was discovered in 2019.

    1916 Boreas, provisional designation 1953 RA, is an eccentric, stony asteroid and near-Earth object of the Amor group, approximately 3 kilometers in diameter. After its discovery in 1953, it became a lost asteroid until 1974. It was named after Boreas from Greek mythology.

    8013 Gordonmoore, provisional designation 1990 KA, is an eccentric, stony asteroid and near-Earth object of the Apollo group, approximately 1–2 kilometers in diameter.

    9564 Jeffwynn, provisional designation 1987 SG3, is an eccentric asteroid and Mars-crosser from the inner regions of the asteroid belt, approximately 4.7 kilometers in diameter.

    3800 Karayusuf, provisional designation 1984 AB, is a Mars-crossing asteroid and suspected binary system from inside the asteroid belt, approximately 2.5 kilometers in diameter. It was discovered on 4 January 1984, by American astronomer Eleanor Helin at the Palomar Observatory in California. The S/L-type asteroid has a short rotation period of 2.2 hours. It was named after Syrian physician Alford Karayusuf, a friend of the discoverer.

    2726 Kotelnikov, provisional designation 1979 SE9, is a stony Koronian asteroid from the outer regions of the asteroid belt, approximately 10 kilometers (6.2 miles) in diameter. It was discovered on 22 September 1979, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij on the Crimean peninsula. The S-type asteroid has a rotation period of 4.91 hours and is a suspected binary system. The asteroid was named for Soviet scientist and pioneer in radar astronomy, Vladimir Kotelnikov.

    <span class="mw-page-title-main">1389 Onnie</span> Asteroid

    1389 Onnie, provisional designation 1935 SS1, is a stony Koronian asteroid from the outer region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 28 September 1935, by Dutch astronomer Hendrik van Gent at Leiden Southern Station, annex to the Johannesburg Observatory in South Africa.

    1928 Summa, provisional designation 1938 SO, is a stony asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter.

    2301 Whitford, provisional designation 1965 WJ, is a background asteroid from the outer regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 20 November 1965, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in the United States. The asteroid was named for American physicist and astronomer Albert Whitford. The uncommon L-type asteroid has a rotation period of 14.3 hours.

    <span class="mw-page-title-main">1289 Kutaïssi</span>

    1289 Kutaïssi is a stony Koronian asteroid from the outer region of the asteroid belt. Discovered by Grigory Neujmin at Simeiz Observatory in 1933, it was later named after the Georgian city of Kutaisi. The S-type asteroid has a rotation period of 3.6 hours and measures approximately 22 kilometers in diameter.

    1513 Mátra, provisional designation 1940 EB, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 10 March 1940, by Hungarian astronomer György Kulin at Konkoly Observatory in Budapest, Hungary. It was later named after the Mátra mountain range.

    (38063) 1999 FH is a rare-type asteroid from the inner regions of the asteroid belt, classified as Mars-crosser and exceptionally slow rotator, approximately 4 kilometers in diameter. It was discovered on 16 March 1999, by Croatian astronomers Korado Korlević and Mario Jurić at Višnjan Observatory in Croatia.

    (154276) 2002 SY50, provisional designation 2002 SY50, is a stony asteroid on a highly eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.1 kilometers (0.7 miles) in diameter. It was discovered on 30 September 2002, by astronomers with the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. The K-type asteroid has a rotation period of 4.8 hours. It will make a close encounter with Earth on 30 October 2071.

    References

    1. 1 2 3 4 5 6 7 8 9 "JPL Small-Body Database Browser: 719 Albert (1911 MT)" (2017-04-30 last obs.). Jet Propulsion Laboratory. Retrieved 2 November 2017.
    2. 1 2 Schmadel, Lutz D. (2007). "(719) Albert". Dictionary of Minor Planet Names – (719) Albert. Springer Berlin Heidelberg. p. 69. doi:10.1007/978-3-540-29925-7_720. ISBN   978-3-540-00238-3.
    3. 1 2 3 "719 Albert (1911 MT)". Minor Planet Center. Retrieved 2 November 2017.
    4. 1 2 3 4 5 6 "LCDB Data for (719) Albert". Asteroid Lightcurve Database (LCDB). Retrieved 2 November 2017.
    5. ↑ Behrend, Raoul. "Asteroids and comets rotation curves – (719) Albert". Geneva Observatory. Retrieved 2 November 2017.
    6. 1 2 3 Krugly, Yu. N.; Belskaya, I. N.; Chiorny, V. G.; Shevchenko, V. G.; Gaftonyuk, N. M. (November 2002). "CCD photometry of near-Earth asteroids in 2001". In: Proceedings of Asteroids. 500: 903–906. Bibcode:2002ESASP.500..903K.
    7. 1 2 Binzel, R. P.; et al. (2002). "Physical Properties of Near-Earth Objects" (PDF). In Bottke, W. F. (ed.). Asteroids III. University of Arizona Press. pp. 255–271. ISBN   978-0-8165-2281-1.
    8. 1 2 Binzel, R. P.; et al. (August 2004). "Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes" (PDF). Icarus . 170 (2): 259–294. Bibcode:2004Icar..170..259B. CiteSeerX   10.1.1.454.6592 . doi:10.1016/j.icarus.2004.04.004. Archived from the original (PDF) on 14 May 2009.
    9. 1 2 3 4 5 Dandy, C. L.; Fitzsimmons, A.; Collander-Brown, S. J. (June 2003). "Optical colors of 56 near-Earth objects: trends with size and orbit". Icarus. 163 (2): 363–373. Bibcode:2003Icar..163..363D. doi:10.1016/S0019-1035(03)00087-3.
    10. 1 2 3 Carry, B.; Solano, E.; Eggl, S.; DeMeo, F. E. (April 2016). "Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry". Icarus. 268: 340–354. arXiv: 1601.02087 . Bibcode:2016Icar..268..340C. doi:10.1016/j.icarus.2015.12.047. S2CID   119258489.
    11. ↑ 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. S2CID   53493339.
    12. 1 2 3 4 Cowen, Ron (1 November 2002). "Astronomers Rediscover Long-Lost Asteroid". Vol. 157, no. 21. Science News.
    13. ↑ IAU Circular: IAUC 7420. Central Bureau for Astronomical Telegrams (Report). IAU. 9 May 2000. Archived from the original on 12 December 2000.
    14. ↑ "Lost Asteroid". Encyclopædia Britannica Online. 2009. Retrieved 27 February 2009.
    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.