1724 Vladimir
Discovery[1]
Discovered byE. Delporte
Discovery siteUccle Obs.
Discovery date28 February 1932
Designations
(1724) Vladimir
Named after
Vladimir
(grandson of astronomer)
Milorad Protić[2]
1932 DC · 1932 ED1
1934 TB · 1952 UV1
1961 VK · 1965 SE
main-belt · (middle)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc85.17 yr (31,110 days)
Aphelion2.8670 AU
Perihelion2.5580 AU
2.7125 AU
Eccentricity0.0570
4.47 yr (1,632 days)
119.75°
0° 13m 14.16s / day
Inclination12.232°
164.03°
298.51°
Physical characteristics
Dimensions28.40±12.05 km[4]
28.45±9.13 km[5]
32.85±0.42 km[6]
34.79 km (IRAS:15)[7]
35.84±0.48 km[8]
36.3±3.6 km[9]
38.476±0.236[10]
40±4 km[11]
42.505±0.219 km[12]
12.557±0.0123 h[13]
12.57±0.01 h[lower-alpha 1]
12.574±0.0043 h[13]
12.582±0.002 h[14]
0.0295±0.0129[12]
0.03±0.01[11]
0.037±0.005[10]
0.04±0.01[9]
0.042±0.006[8]
0.0441 (IRAS:15)[7]
0.05±0.16[4]
0.051±0.002[6]
0.06±0.04[5]
FBCU:: (Tholen)[1]
B (SMASS)[1] · X[15] · B[3]
B–V = 0.693[1]
U–B = 0.259[1]
11.250±0.003 (R)[13] · 11.3[1][3][5][6][8][9][11][12] · 11.41[4] · 11.48±0.26[15]

    1724 Vladimir, provisional designation 1932 DC, is a rare-type asteroid from the central region of the asteroid belt, approximately 35 kilometers in diameter. It was discovered on 28 February 1932, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle, Belgium.[16] The asteroid was later named by astronomer Milorad Protić after his grandson, Vladimir.[2]

    Orbit and classification

    Vladimir orbits the Sun in the central main-belt at a distance of 2.6–2.9 AU once every 4 years and 6 months (1,632 days). Its orbit has an eccentricity of 0.06 and an inclination of 12° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Uccle in 1928.[16]

    Physical characteristics

    The asteroid has a rare B- and FBCU spectral type in the SMASS and Tholen taxonomy, respectively.[1]

    Lightcurves

    Two rotational lightcurve of Vladimir were obtained by Serbian astronomer Vladimir Benishek at the Belgrade Observatory in April 2008, and August 2015. Analysis of the bimodal lightcurve gave a rotation period of 12.57 and 12.582 hours with a relatively low brightness variation of 0.14 and 0.24 magnitude, respectively (U=2/2+).[14][lower-alpha 1]

    In December 2010, and January 2012, photometric observations in the R-band at the Palomar Transient Factory in California gave a period of 12.574 and 12.557 hours with an amplitude of 0.23 and 0.22, respectively (U=2/2).[13]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Vladimir measures between 28.40 and 42.505 kilometers in diameter, and its surface has a low albedo between 0.0295 and 0.037.[4][5][6][9][10][11]

    The Collaborative Asteroid Lightcurve Link adopts the results obtained by the Infrared Astronomical Satellite IRAS, that is, an albedo of 0.0441 and a diameter of 34.79 kilometers with an absolute magnitude of 11.30.[3][7]

    Naming

    This minor planet was named by Serbian astronomer Milorad Protić, who rediscovered the body in 1952, and made its permanent numbering possible (also see Lost minor planet). Protić named it after his grandson, Vladimir.[2] The official naming citation was published by the Minor Planet Center on 1 April 1980 (M.P.C. 5281).[17]

    Notes

    1. 1 2 Benishek (2011) web: rotation period 12.57±0.01 hours with a brightness amplitude of 0.14. Summary figures at Asteroid Lightcurve Database for (1724) Vladimir

    References

    1. 1 2 3 4 5 6 7 8 9 "JPL Small-Body Database Browser: 1724 Vladimir (1932 DC)" (2017-05-02 last obs.). Jet Propulsion Laboratory. Retrieved 7 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1724) Vladimir". Dictionary of Minor Planet Names – (1724) Vladimir. Springer Berlin Heidelberg. p. 137. doi:10.1007/978-3-540-29925-7_1725. ISBN 978-3-540-00238-3.
    3. 1 2 3 4 "LCDB Data for (1724) Vladimir". Asteroid Lightcurve Database (LCDB). Retrieved 21 December 2016.
    4. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.
    5. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. S2CID 9341381. Retrieved 7 June 2017.
    6. 1 2 3 4 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 22 October 2019.
    8. 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. S2CID 46350317. Retrieved 21 December 2016.
    9. 1 2 3 4 Alí-Lagoa, V.; Licandro, J.; Gil-Hutton, R.; Cañ; ada-Assandri, M.; Delbo', M.; et al. (June 2016). "Differences between the Pallas collisional family and similarly sized B-type asteroids". Astronomy and Astrophysics. 591: 11. Bibcode:2016A&A...591A..14A. doi:10.1051/0004-6361/201527660. hdl:11336/63614.
    10. 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. S2CID 119293330. Retrieved 21 December 2016.
    11. 1 2 3 4 Alí-Lagoa, V.; de León, J.; Licandro, J.; Delbó, M.; Campins, H.; Pinilla-Alonso, N.; et al. (June 2013). "Physical properties of B-type asteroids from WISE data". Astronomy and Astrophysics. 554: 16. arXiv:1303.5487. Bibcode:2013A&A...554A..71A. doi:10.1051/0004-6361/201220680. S2CID 119214002. Retrieved 21 December 2016.
    12. 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. S2CID 35447010.
    13. 1 2 3 4 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. S2CID 8342929. Retrieved 21 December 2016.
    14. 1 2 Benishek, Vladimir (April 2015). "Rotation Period Determinations for 1724 Vladimir, 3965 Konopleva, and 9222 Chubey". The Minor Planet Bulletin. 42 (2): 143–144. Bibcode:2015MPBu...42..143B. ISSN 1052-8091. Retrieved 7 June 2017.
    15. 1 2 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. Retrieved 21 December 2016.
    16. 1 2 "1724 Vladimir (1932 DC)". Minor Planet Center. Retrieved 21 December 2016.
    17. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 21 December 2016.
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