1067 Lunaria

1067 Lunaria, provisional designation 1926 RG, is a stony Itha asteroid from the outer regions of the asteroid belt, approximately 18 kilometers in diameter. It was discovered on 9 September 1926, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[13] The asteroid was named after the flowering plant Lunaria (honesty).[3]

1067 Lunaria
Discovery [1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date9 September 1926
Designations
(1067) Lunaria
Pronunciation/luːˈnɛəriə/[2]
Named after
Lunaria (flowering plant)[3]
1926 RG · 1974 PJ
1974 QC3
main-belt · (outer) [4]
Itha [5]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc90.74 yr (33,142 days)
Aphelion3.4206 AU
Perihelion2.3207 AU
2.8706 AU
Eccentricity0.1916
4.86 yr (1,777 days)
222.90°
0° 12m 9.36s / day
Inclination10.547°
289.59°
115.03°
Physical characteristics
Dimensions15.43±0.73 km[6]
18.02±1.33 km[7]
18.07 km (derived)[4]
20.011±0.100 km[8]
22.968±0.243 km[9]
6.057±0.001 h[10]
7.74 h[11]
0.1240±0.0225[9]
0.185±0.012[8]
0.20 (assumed)[4]
0.221±0.034[7]
0.298±0.057[6]
L/S [12] · S [4]
10.85±0.31[12] · 10.99[1][6][7] · 11.08[4][9][11]

    Orbit and classification

    Lunaria is a member of the Itha family,[5] a very small family of asteroids, named after its parent body 918 Itha.[14]:23

    It orbits the Sun in the outer asteroid belt at a distance of 2.3–3.4 AU once every 4 years and 10 months (1,777 days; semi-major axis of 2.87 AU). Its orbit has an eccentricity of 0.19 and an inclination of 11° with respect to the ecliptic.[1] The body's observation arc begins at Heidelberg in October 1926, one month after its official discovery observation.[13]

    Physical characteristics

    Lunaria has been characterized as both L- and S-type asteroid by Pan-STARRS photometric survey.[12] The overall spectral type for the Itha family is that of a stony S-type.[14]:23

    Rotation period

    In July 1984, a first rotational lightcurve of Lunaria was obtained by American astronomer Richard Binzel. Lightcurve analysis gave a rotation period of 7.74 hours with a brightness variation of 0.13 magnitude (U=2).[11] In September 2004, Donald Pray at the Carbuncle Hill Observatory (I00) derived a refined period of 6.057 hours with an amplitude of 0.27 magnitude from photometric observations (U=3).[10]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Lunaria measures between 15.43 and 22.968 kilometers in diameter and its surface has an albedo between 0.1240 and 0.298.[6][7][8][9]

    The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 18.07 kilometers based on an absolute magnitude of 11.08.[4]

    Naming

    This minor planet was named after Lunaria (commonly known as "honesty"), a flowering plant in the mustard family. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 101).[3]

    Reinmuth's flowers

    Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between (1009) and (1200). This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were exclusively named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).[15]

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    References
    1. "JPL Small-Body Database Browser: 1067 Lunaria (1926 RG)" (2017-06-05 last obs.). Jet Propulsion Laboratory. Retrieved 7 December 2017.
    2. "lunarian". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.)
    3. Schmadel, Lutz D. (2007). "(1067) Lunaria". Dictionary of Minor Planet Names – (1067) Lunaria. Springer Berlin Heidelberg. p. 91. doi:10.1007/978-3-540-29925-7_1068. ISBN 978-3-540-00238-3.
    4. "LCDB Data for (1067) Lunaria". Asteroid Lightcurve Database (LCDB). Retrieved 7 December 2017.
    5. "Asteroid 1067 Lunaria – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
    6. 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 7 December 2017.
    7. 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. Retrieved 17 October 2019. (online, AcuA catalog p. 153)
    8. 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.
    9. 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.
    10. Pray, Donald P. (March 2005). "Lightcurve analysis of asteroids 276, 539, 1014, 1067, 3693 and 4774". The Minor Planet Bulletin. 32 (1): 8–9. Bibcode:2005MPBu...32....8P. ISSN 1052-8091. Retrieved 7 December 2017.
    11. 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 7 December 2017.
    12. 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 7 December 2017.
    13. "1067 Lunaria (1926 RG)". Minor Planet Center. Retrieved 7 December 2017.
    14. Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). Identification and Dynamical Properties of Asteroid Families. Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
    15. Schmadel, Lutz D. (2007). "(1054) Forsytia". Dictionary of Minor Planet Names – (1054) Forsytia. Springer Berlin Heidelberg. p. 90. doi:10.1007/978-3-540-29925-7_1055. ISBN 978-3-540-00238-3.

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