645 Agrippina

Last updated

645 Agrippina
Discovery  [1]
Discovered by J. H. Metcalf
Discovery site Taunton, MA, United States
Discovery date13 September 1907
Designations
(645) Agrippina
Pronunciation /æɡrɪˈpaɪnə/ [2]
Named after
Agrippīna
(the Elder, the Younger) [3]
1907 AG
main-belt (outer)
Orbital characteristics   [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 108.28 yr (39551 d)
Aphelion 3.6806  AU (550.61  Gm)
Perihelion 2.7439 AU (410.48 Gm)
3.2123 AU (480.55 Gm)
Eccentricity 0.14581
5.76 yr (2102.9 d)
322.43°
0° 10m 16.284s / day
Inclination 7.0434°
0.16657°
84.246°
Earth  MOID 1.76975 AU (264.751 Gm)
Jupiter  MOID 1.61478 AU (241.568 Gm)
TJupiter 3.163
Physical characteristics
Dimensions28.00±1.3 km (IRAS:17) [4]
30.86±0.76 km [5]
36.165±0.406 km [6]
29.57±0.58 km [7]
27.94 km (derived) [8]
Mean radius
14.00±0.65 km
32.6  h (1.36  d) [1] [9]
34.39±0.05 h [10]
0.2381±0.025(IRAS:17) [1] [4]
0.198±0.011 [5]
0.1369±0.0218 [6]
0.213±0.028 [7]
0.2283 (SIMPS) [8]
B–V = 0.871
U–B = 0.412
Tholen = S [1]  · S   [8]
9.94 [1]

    645 Agrippina, provisional designation 1907 AG, is a stony asteroid from the outer region of the asteroid belt, roughly 30 kilometers in diameter. It was discovered by American astronomer reverend Joel Metcalf at Taunton, Massachusetts, USA, on 13 September 1907. [11]

    The S-type asteroid orbits the Sun at a distance of 2.7–3.7  AU once every 5 years and 9 months (2,103 days). Its orbit shows an eccentricity of 0.15 and is tilted by 7 degrees to the plane of the ecliptic. A photometric light-curve analysis from the 1980s and a provisional observation in 2004 rendered a rotation period of 32.6 and 34.4 hours, respectively. [9] [10]

    According to the surveys carried out by the Infrared Astronomical Satellite, IRAS, the Japanese Akari satellite, and the U.S.Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid has a dissimilar albedo in the range of 0.14 to 0.23, which leads to a varying estimate for its diameter from 28 to 36 kilometers. [4] [5] [6] [7] The Collaborative Asteroid Lightcurve Link publishes an albedo of 0.23 from an alternative result of the Supplemental IRAS Minor Planet Survey (SIMPS) and derives a slightly lower diameter of 27.9 kilometers. [8]

    The minor planet was named for two women of ancient Roman history. Agrippina the Elder (14 BCE – 33) was the daughter of the Roman statesman Marcus Vipsanius Agrippa, the wife of Germanicus and the mother of the Emperor Caligula. Her daughter, Agrippina the Younger (15–59 AD) was the mother of Emperor Nero. The naming might be influenced by the two letters of the provisional designation 1907 AG. [3] In the Dictionary of Minor Planet Names, Lutz Schmadel supposes that the name originated from a list of female names from mythology and history, compiled by the Astronomisches Rechen-Institut (ARI) in 1913. The ARI then sent this list to a number of astronomers with the request to name their discoveries in order to avoid confusion, as the number of unnamed minor planet up to number 700 had grown significantly at the time. [12]

    Related Research Articles

    627 Charis is an asteroid and the parent body of the Charis family, located in the outer regions of the asteroid belt, approximately 49 kilometers in diameter. It was discovered on 4 March 1907, by German astronomer August Kopff at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the Greek goddess Charis, a name which may have been inspired by the asteroid's provisional designation 1907 XS.

    647 Adelgunde, provisional designation 1907 AD, is a stony asteroid from the inner regions of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 11 September 1907, by German astronomer August Kopff at Heidelberg Observatory in southern Germany. The origin of the asteroid's name is unknown, it may be derived from the name of Princess Adelgunde of Bavaria.

    <span class="mw-page-title-main">744 Aguntina</span>

    744 Aguntina, provisional designation 1913 QW, is a rare-type carbonaceous asteroid from the outer region of the asteroid belt, about 60 kilometers in diameter. It was discovered by Austrian astronomer Joseph Rheden at Vienna Observatory, Austria, on 26 February 1913.

    <span class="mw-page-title-main">771 Libera</span>

    771 Libera, provisional designation 1913 TO, is a metallic asteroid from the middle region of the asteroid belt, about 29 kilometers in diameter. It was discovered by Austrian astronomer Joseph Rheden at the Vienna Observatory in Austria, on 21 November 1913.

    <span class="mw-page-title-main">950 Ahrensa</span>

    950 Ahrensa, provisional designation 1921 JP, is a stony Phocaea asteroid and slow rotator from the inner regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 1 April 1921, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany.

    <span class="mw-page-title-main">984 Gretia</span>

    984 Gretia is a stony background asteroid from the central regions of the asteroid belt, approximately 32 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 27 August 1922 and given the provisional designation 1922 MH. The asteroid was named after Greta, sister-in-law of ARI-astronomer Albrecht Kahrstedt.

    1043 Beate, provisional designation 1925 HB, is a stony asteroid from the outer region of the asteroid belt, approximately 32 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 22 April 1925. Any reference of its name to a person is unknown.

    1072 Malva, provisional designation 1926 TA, is a dark background asteroid from the outer regions of the asteroid belt, approximately 48 kilometers in diameter. It was discovered on 4 October 1926, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid was named after the flowering plant Malva (mallow).

    3037 Alku, provisional designation 1944 BA, is a carbonaceous asteroid from the central region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 17 January 1944, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.

    1232 Cortusa, provisional designation 1931 TF2, is a background asteroid from the outer regions of the asteroid belt, approximately 40 kilometers (25 miles) in diameter. It was discovered on 10 October 1931, by astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The X-type asteroid has a rotation period of 25.2 hours. It was named after the plant Cortusa and indirectly honors astronomer Gustav Stracke.

    1227 Geranium, provisional designation 1931 TD, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 5 October 1931, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory. The asteroid was named for the flowering plant Geranium (cranesbills).

    1960 Guisan, provisional designation 1973 UA, is a carbonaceous asteroid from the middle region of the asteroid belt, approximately 25 kilometers in diameter.

    2016 Heinemann, provisional designation 1938 SE, is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 18 September 1938, by German astronomer Alfred Bohrmann at Heidelberg Observatory in southwest Germany, and later named after ARI-astronomer Karl Heinemann (1898–1970).

    1233 Kobresia, provisional designation 1931 TG2, is a carbonaceous background asteroid from the central regions of the asteroid belt, approximately 33 kilometers in diameter. It was discovered on 10 October 1931, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The asteroid was named for the grass-like flowering plant Kobresia, a genus in the sedge family.

    <span class="mw-page-title-main">1841 Masaryk</span>

    1841 Masaryk (prov. designation: 1971 UO1) is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 26 October 1971, by Czech astronomer Luboš Kohoutek at Bergedorf Observatory in Hamburg, Germany. The asteroid was named after the first President of Czechoslovakia, Tomáš Garrigue Masaryk.

    1760 Sandra, provisional designation 1950 GB, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 35 kilometers in diameter. It was discovered on 10 April 1950, by South African astronomer Ernest Johnson at Union Observatory in Johannesburg, and named after his granddaughter Sandra.

    1628 Strobel, provisional designation 1923 OG, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 55 kilometers in diameter.

    1461 Jean-Jacques, provisional designation 1937 YL, is a metallic asteroid from the outer region of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 30 December 1937, by French astronomer Marguerite Laugier at Nice Observatory in southern France, who named it after her son Jean-Jacques Laugier.

    1535 Päijänne, provisional designation 1939 RC, is an asteroid from the outer region of the asteroid belt, approximately 25 kilometers in diameter. It was discovered on 9 September 1939, by Finnish astronomer Yrjö Väisälä at the Turku Observatory in Southwest Finland. It was later named for Lake Päijänne.

    1481 Tübingia, provisional designation 1938 DR, is a dark asteroid from the outer region of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 7 February 1938, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, and named for the German city of Tübingen.

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 645 Agrippina (1907 AG)" (2015-12-07 last obs.). Jet Propulsion Laboratory . Retrieved 7 May 2016.
    2. ↑ Noah Webster (1884) A Practical Dictionary of the English Language
    3. 1 2 Schmadel, Lutz D. (2003). "(645) Agrippina". Dictionary of Minor Planet Names – (645) Agrippina. Springer Berlin Heidelberg. p. 64. doi:10.1007/978-3-540-29925-7_646. ISBN   978-3-540-29925-7.
    4. 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 22 October 2019.
    5. 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)
    6. 1 2 3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv: 1109.6407 . Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90 . Retrieved 5 January 2016.
    7. 1 2 3 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 5 January 2016.
    8. 1 2 3 4 "LCDB Data for (645) Agrippina". Asteroid Lightcurve Database (LCDB). Retrieved 5 January 2016.
    9. 1 2 Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus. 72 (1): 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN   0019-1035 . Retrieved 5 January 2016.
    10. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (645) Agrippina". Geneva Observatory . Retrieved 5 January 2016.
    11. ↑ "645 Agrippina (1907 AG)". Minor Planet Center. Retrieved 5 January 2016.
    12. ↑ Schmadel, Lutz D. (2003). "(579) Sidonia". Dictionary of Minor Planet Names – (579) Sidonia (Note about ARI). Springer Berlin Heidelberg. pp. 59–60. doi:10.1007/978-3-540-29925-7_580. ISBN   978-3-540-29925-7.
    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.