2029 Binomi

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2029 Binomi
Discovery  [1]
Discovered by P. Wild
Discovery site Zimmerwald Obs.
Discovery date11 September 1969
Designations
(2029) Binomi
Named after
Alessandro Binomi
(fictitious mathematician) [2]
1969 RB ·1971 BX2
1976 QV1
main-belt  · Vesta   [3]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 47.52 yr (17,355 days)
Aphelion 2.6515 AU
Perihelion 2.0477 AU
2.3496 AU
Eccentricity 0.1285
3.60 yr (1,316 days)
120.75°
0° 16m 25.32s / day
Inclination 5.5869°
278.03°
67.217°
Physical characteristics
Dimensions5.39 km (calculated) [3]
6.893±0.164 km [4]
7.050±0.058 km [5]
3.7555±0.010 h [6]
3.756±0.0015 h [7]
0.24 (assumed) [3]
0.2468±0.0358 [5]
0.257±0.048 [4]
SMASS = S   [1] [3]
12.9 [5]  ·13.0 [1]  ·13.030±0.210(R) [6]  ·13.058±0.001(R) [7]  ·13.24±0.26 [8]  ·13.51 [3]

    2029 Binomi, provisional designation 1969 RB, is a Vestian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter.

    Contents

    The asteroid was discovered on 11 September 1969, by Paul Wild at Zimmerwald Observatory near Bern, Switzerland. [9] It was named for the fictitious mathematician "Alessandro Binomi" who invented the binomial formula. [2]

    Classification and orbit

    Binomi is a member of the Vesta family, one of the largest collisional populations of the inner asteroid belt. It orbits the Sun at a distance of 2.0–2.7  AU once every 3 years and 7 months (1,316 days). Its orbit has an eccentricity of 0.13 and an inclination of 6° with respect to the ecliptic. [1]

    The body's observation arc begins at Crimea–Nauchnij on 10 September 1969, the night before its official discovery observation at Zimmerwald. [9]

    Physical characteristics

    In the SMASS classification, Binomi is a stony S-type asteroid. [1]

    Lightcurves

    In January 2014, two rotational lightcurves of Binomi were obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 3.7555 and 3.756 hours with a brightness variation of 0.51 and 0.52 magnitude, respectively ( U=2/2 ). [6] [7]

    Diameter and albedo

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Binomi measures 6.893 and 7.050 kilometers in diameter and its surface has an albedo of 0.2468 and 0.257, respectively. [4] [5]

    The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of its family – and calculates a diameter of 5.39 kilometers based on an absolute magnitude of 13.51. [3]

    Naming

    This minor planet was named for the fictitious mathematician "Alessandro Binomi", inventor of the binomial formula. This act of parody science was common among students at German-speaking universities (de:Binomi). The real inventors of the binomial formula are the Bernoullis, after whom the asteroid 2034 Bernoulli was named. [2] The approved naming citation was published by the Minor Planet Center on 1 August 1981 ( M.P.C. 6208). [10]

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    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 2029 Binomi (1969 RB)" (2017-03-17 last obs.). Jet Propulsion Laboratory . Retrieved 28 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(2029) Binomi". Dictionary of Minor Planet Names – (2029) Binomi. Springer Berlin Heidelberg. p. 164. doi:10.1007/978-3-540-29925-7_2030. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (2029) Binomi". Asteroid Lightcurve Database (LCDB). Retrieved 28 June 2017.
    4. 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 . Retrieved 28 June 2017.
    5. 1 2 3 4 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.
    6. 1 2 3 Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 219 (2): 19. arXiv: 1506.08493 . Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27 . Retrieved 28 June 2017.
    7. 1 2 3 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 28 June 2017.
    8. ↑ 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 28 June 2017.
    9. 1 2 "2029 Binomi (1969 RB)". Minor Planet Center. Retrieved 28 June 2017.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 28 June 2017.
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