1681 Steinmetz

1681 Steinmetz
Discovery[1]
Discovered by M. Laugier
Discovery site Nice Observatory
Discovery date 23 November 1948
Designations
MPC designation 1681 Steinmetz
Named after
Julius Steinmetz
(amateur astronomer)[2]
1948 WE · 1926 YA
1936 BE · 1939 VC
1945 ED · 1957 YH
1958 AE · A914 DB
main-belt · (middle)[3]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 102.05 yr (37274 days)
Aphelion 3.2487 AU (486.00 Gm)
Perihelion 2.1483 AU (321.38 Gm)
2.6985 AU (403.69 Gm)
Eccentricity 0.20389
4.43 yr (1619.1 d)
35.549°
 13m 20.424s / day
Inclination 7.2037°
94.437°
1.8382°
Earth MOID 1.16476 AU (174.246 Gm)
Jupiter MOID 1.94772 AU (291.375 Gm)
Jupiter Tisserand parameter 3.327
Physical characteristics
Dimensions 14.58±0.75 km[4]
16.16±0.34 km[5]
20.49 km (caculated)[3]
8.99917 h (0.374965 d)[1][6]
0.204±0.024[4]
0.161±0.041[5]
0.10 (assumed)[3]
B–V = 0.878
U–B = 0.447
Tholen = S
S[3]
11.56

    1681 Steinmetz, provisional designation 1948 WE, is a stony asteroid from the middle region of the asteroid belt, about 16 kilometers in diameter. It was discovered on 23 November 1948 by French female astronomer Marguerite Laugier at Nice Observatory in south-eastern France.[7]

    The S-type asteroid orbits the Sun at a distance of 2.1–3.2 AU once every 4 years and 5 months (1,618 days). Its orbit shows an eccentricity of 0.20 and is tilted by 7 degrees to the plane of the ecliptic. It has a rotation period of 9.0 hours[6] and an albedo of 0.16–0.20, according to Akari and WISE/NEOWISE, while the Lightcurve Datatbase project assumes a somewhat lower albedo of 0.10.[3][4][5]

    According to a proposal by Otto Kippes, who verified the discovery, it was named after Julius Steinmetz (1893–1965), a German amateur astronomer, orbit computer, and pastor from Gerolfingen in Bavaria.[2]

    References

    1. 1 2 3 "JPL Small-Body Database Browser: 1681 Steinmetz (1948 WE)" (2015-10-11 last obs.). Jet Propulsion Laboratory. Retrieved 22 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1681) Steinmetz. Springer Berlin Heidelberg. p. 134. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1681) Steinmetz". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; 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. Retrieved November 2015.
    5. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; 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 November 2015.
    6. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1681) Steinmetz". Geneva Observatory. Retrieved November 2015.
    7. "1681 Steinmetz (1948 WE)". Minor Planet Center. Retrieved November 2015.

    External links


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