148 Gallia

Short description: Main-belt asteroid

148 Gallia

Orbital diagram

Discovery[1]
Discovered by| P. M. Henry
Discovery site| Paris
Discovery date| 7 August 1875
Designations

MPC designation

| (148) Gallia
Pronunciation| /ˈɡæliə/[5]
Named after| Gaul[2]
(Latin name for France )

Alternative designations

| A875 PA
Minor planet category| main-belt[1][3] * (middle)
Gallia[4]
Orbital characteristics[3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc| 138.37 yr (50,540 d)
|{{{apsis}}}|helion}}| 3.2885 AU
|{{{apsis}}}|helion}}| 2.2531 AU

Semi-major axis

| 2.7708 AU
Eccentricity| 0.1868
Orbital period| 4.61 yr (1,685 d)
Mean anomaly| 278.58°
Mean motion| 0° 12m 49.32s / day
Inclination| 25.291°
Longitude of ascending node| 145.01°

|{{{apsis}}}|helion}}

| 252.79°
Physical characteristics
Mean diameter| 80.87±1.04 km[6]
83.45±5.07 km[7]
85.91±23.39 km[8]
97.75±3.7 km[9]
98.09 km (derived)[10]
Mass| (4.89±1.67)×1018 kg[7]
Mean density| 16.06±6.22 g/cm3[7]
Rotation period| 20.6592±0.0007 h[11]
20.66±0.01 h[11]
20.664 h[12]
20.665266 h[lower-alpha 1]
20.666±0.002 h[13][lower-alpha 2]
Geometric albedo| 0.1640±0.013[9]
0.2013 (derived)[10]
0.21±0.12[8]
0.240±0.008[6]

Spectral type

| Tholen = GU[3]
SMASS = S[3][10]
B–V = 0.858[3]
U–B = 0.423[3]
Absolute magnitude (H)| 6.97±0.84[14]
7.4[10]
7.4±0.1[15][16]
7.63[3][6][9]
7.67[8]
7.72±0.10[17]

Gallia (minor planet designation: 148 Gallia) is an asteroid from the central regions of the asteroid belt, approximately 90 kilometers (56 miles) in diameter. It was discovered on 7 August 1875, by the French brothers Paul Henry and Prosper Henry at the Paris, but the credit for this discovery was given to Prosper.[1] It was named after the Latin name for the country of France, Gaul.[2] Based upon its spectrum, it is an unusual G-type asteroid (GU) and a stony S-type asteroid in the Tholen and SMASS classification, respectively.[3][18]

Photometric observations of this asteroid at the European Southern Observatory in 1977–78 gave a light curve with a period of 0.86098 ± 0.00030 days (20.6635 ± 0.0072 h) and a brightness variation of 0.32 in magnitude.[12] A 2007 study at the Palmer Divide Observatory in Colorado, United States, yielded a period of 20.666 ± 0.002 hours with a magnitude variation of 0.21.[13][lower-alpha 2]

This object is the namesake of the Gallia family (802), a small family of nearly 200 known stony asteroids that share similar spectral properties and orbital elements.[19] Hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination.[20]

## Notes

1. ↑ Warner (2011) web: modeled lightcurve gave a rotation period 20.665266 hours. Summary figures for (148) Gallia at the LCDB
2. ↑ 2.0 2.1 Lightcurve plot of 148 Gallia, Palmer Divide Observatory, B. D. Warner (2007): rotation period 20.666±0.002 hours with a brightness amplitude of 0.21±0.02 mag. Quality code of 2+. Summary figures at the LCDB

## References

1. ↑ 1.0 1.1 1.2 "148 Gallia". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=148. Retrieved 18 April 2018.
2. ↑ 2.0 2.1 Schmadel, Lutz D. (2007). "(148) Gallia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 29. doi:10.1007/978-3-540-29925-7_149. ISBN 978-3-540-00238-3.
3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 "JPL Small-Body Database Browser: 148 Gallia". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000148. Retrieved 18 April 2018.
4. ↑ "Asteroid 148 Gallia". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=148+Gallia. Retrieved 24 October 2019.
5. ↑ Noah Webster (1884) A Practical Dictionary of the English Language
6. ↑ 6.0 6.1 6.2 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. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U. (online, AcuA catalog p. 153)
7. ↑ 7.0 7.1 7.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73 (1): 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C See Table 1.
8. ↑ 8.0 8.1 8.2 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. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N.
9. ↑ 9.0 9.1 9.2 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. https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab. Retrieved 22 October 2019.
10. ↑ 10.0 10.1 10.2 10.3 "LCDB Data for (148) Gallia". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=148|Gallia. Retrieved 18 April 2018.
11. ↑ 11.0 11.1 Behrend, Raoul. "Asteroids and comets rotation curves – (148) Gallia". Geneva Observatory. http://obswww.unige.ch/~behrend/page1cou.html#000148. Retrieved 18 April 2018.
12. ↑ 12.0 12.1 Surdej, A.; Surdej, J. (September 1979). "Photoelectric lightcurves and rotation period of the minor planet 148 Gallia". Astronomy and Astrophysics Supplement Series 37: 471–474. Bibcode: 1979A&AS...37..471S. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1979A&AS...37..471S. Retrieved 18 April 2018.
13. ↑ 13.0 13.1 Warner, Brian D. (December 2007). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - March–May 2007". The Minor Planet Bulletin 34 (4): 104–107. ISSN 1052-8091. Bibcode: 2007MPBu...34..104W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2007MPBu...34..104W. Retrieved 18 April 2018.
14. ↑ 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V.
15. ↑ Harris, A. W.; Young, J. W.; Dockweiler, Thor; Gibson, J.; Poutanen, M.; Bowell, E. (January 1992). "Asteroid lightcurve observations from 1981". Icarus 95 (1): 115–147.ResearchsupportedbyLowellObservatoryEndowmentandNASA. doi:10.1016/0019-1035(92)90195-D. ISSN 0019-1035. Bibcode: 1992Icar...95..115H. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1992Icar...95..115H. Retrieved 18 April 2018.
16. ↑ Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus 221 (1): 365–387. doi:10.1016/j.icarus.2012.07.026. Bibcode: 2012Icar..221..365P. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P. Retrieved 18 April 2018.
17. ↑ Warner, Brian D. (December 2007). "Initial Results of a Dedicated H-G Project". The Minor Planet Bulletin 34 (4): 113–119. ISSN 1052-8091. Bibcode: 2007MPBu...34..113W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2007MPBu...34..113W. Retrieved 18 April 2018.
18. ↑ Lazzaro, D.; Angeli, C. A.; Carvano, J. M.; Mothé-Diniz, T.; Duffard, R.; Florczak, M. (November 2004). "S 3OS 2: the visible spectroscopic survey of 820 asteroids". Icarus 172 (1): 179–220. doi:10.1016/j.icarus.2004.06.006. Bibcode: 2004Icar..172..179L. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004Icar..172..179L. Retrieved 18 April 2018.
19. ↑ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131. Bibcode: 2015aste.book..297N.
20. ↑ Novakovic, Bojan; Cellino, Alberto; Knezevic, Zoran (November 2011). "Families among high-inclination asteroids". Icarus 216 (1): 69–81. doi:10.1016/j.icarus.2011.08.016. Bibcode: 2011Icar..216...69N.

## External links

* Asteroid Lightcurve Database (LCDB), query form (info )
* Dictionary of Minor Planet Names, Google books
* Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
* Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
* 148 Gallia at AstDyS-2, Asteroids—Dynamic Site
* Ephemeris * Observation prediction * Orbital info * Proper elements * Observational info
* 148 Gallia at the JPL Small-Body Database
* Close approach * Discovery * Ephemeris * Orbit diagram * Orbital elements * Physical parameters

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