324 Bamberga

{{Short description|Main-belt asteroid}}

{{Use dmy dates|date=January 2020}}

{{Infobox planet

| minorplanet=yes

| background=#D6D6D6

| name=324 Bamberga

| image=Potw1749a Bamberga crop.png

| caption=VLT image of Bamberga

| image_scale=

| discoverer=Johann Palisa

| discovered=25 February 1892

| mpc_name=(324) Bamberga

| alt_names=

| pronounced={{IPAc-en|b|æ|m|ˈ|b|ɜr|ɡ|ə}}

| adjective=Bambergian {{IPAc-en|b|æ|m|ˈ|b|ɜr|dʒ|i|ə|n|,_|-|g|i|ə|n}}

| named_after=Bamberg

| mp_category=Main belt

| epoch=31 July 2016 (JD 2457600.5)

| semimajor={{Convert|2.68232|AU|Gm|abbr=on}}

| perihelion={{Convert|1.77023|AU|Gm|abbr=on}}

| aphelion={{Convert|3.59442|AU|Gm|abbr=on|lk=on}}

| eccentricity=0.34004

| period=4.39 yr (1604.6 d)

| inclination=11.1011°

| asc_node=327.883°

| arg_peri=44.2409°

| mean_anomaly=225.419°

| flattening = 0.04{{efn|1=Flattening derived from the maximum aspect ratio (c/a): $f=1-\backslash frac\{c\}\{a\}$, where (c/a) = {{val|0.96|0.05}}.}}

| mean_diameter={{val| 227 |3 |u=km}}P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
234.67 ± 7.80 km
229.4 ± 7.4 km {{small|(IRAS)}}{{cite web|last=Tedesco |first=E.F. |author2=Noah, P.V. |author3=Noah, M. |author4=Price, S.D. |title=IRAS Minor Planet Survey. IRAS-A-FPA-3-RDR-IMPS-V6.0. |publisher=NASA Planetary Data System |date=2004 |url=http://www.psi.edu/pds/resource/imps.html |access-date=15 March 2007 |archive-url=https://archive.today/20070119015129/http://www.psi.edu/pds/resource/imps.html |archive-date=19 January 2007 |url-status=dead }}

| mass={{val|10.2|0.9|e=18|u=kg}}
{{val|11|e=18|u=kg}}{{cite journal|last=Pitjeva |first=E. V. |author-link=Elena V. Pitjeva |title=High-Precision Ephemerides of Planets—EPM and Determination of Some Astronomical Constants |journal=Solar System Research |date=2005 |volume=39 |issue=3 |pages=176 |url=http://iau-comm4.jpl.nasa.gov/EPM2004.pdf |doi=10.1007/s11208-005-0033-2 |bibcode=2005SoSyR..39..176P |url-status=dead |archive-url=https://web.archive.org/web/20081031065523/http://iau-comm4.jpl.nasa.gov/EPM2004.pdf |archive-date=31 October 2008 }}
{{val|10.3|1.0|e=18|u=kg}}

| density={{val|1.67|0.16|u=g/cm3}}
{{val|1.52|0.20|u=g/cm3}}

| rotation=1.226 d{{cite web|editor-last=Harris |editor-first=A. W. |editor2=Warner, B.D. |editor3=Pravec, P. |title=Asteroid Lightcurve Derived Data. EAR-A-5-DDR-DERIVED-LIGHTCURVE-V8.0. |publisher=NASA Planetary Data System |date=2006 |url=http://www.psi.edu/pds/resource/lc.html |access-date=15 March 2007 |archive-url=https://web.archive.org/web/20070128183706/http://www.psi.edu/pds/resource/lc.html |archive-date=28 January 2007 |url-status=dead }}
{{Convert|29.43|h|d|abbr=on|lk=on}}{{cite web

|id=2008-07-26 last obs

|title=JPL Small-Body Database Browser: 324 Bamberga

|url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=324

|access-date=11 May 2016}}

| spectral_type=C-type asteroid{{cite web|editor-last=Neese |editor-first=C. |title=Asteroid Taxonomy.EAR-A-5-DDR-TAXONOMY-V5.0. |publisher=NASA Planetary Data System |date=2005 |url=http://www.psi.edu/pds/resource/taxonomy.html |access-date=15 March 2007 |archive-url=https://web.archive.org/web/20070310220044/http://www.psi.edu/pds/resource/taxonomy.html |archive-date=10 March 2007 |url-status=dead }}

| abs_magnitude=6.82
7.23

| albedo=0.060 (calculated)
{{val|0.0628|0.004}}
{{val|0.050|0.007}}

| mean_motion={{Deg2DMS|0.224356|sup=ms}} / day

| orbit_ref=

| observation_arc=124.08 yr (45321 d)

| uncertainty=0

}}

324 Bamberga is one of the largest asteroids in the asteroid belt. It was discovered by Johann Palisa on 25 February 1892 in Vienna. It is one of the top-20 largest asteroids in the asteroid belt. Apart from the near-Earth asteroid Eros, it was the last asteroid which is ever easily visible with binoculars to be discovered.

Overall Bamberga is the tenth-brightest main-belt asteroid after, in order, Vesta, Pallas, Ceres, Iris, Hebe, Juno, Melpomene, Eunomia and Flora. Its high eccentricity (for comparison 36% higher than that of Pluto), though, means that at most oppositions other asteroids reach higher magnitudes.