HD 24479

{{Starbox begin

| name = HD 24479

}}

{{Starbox image

| image =

{{Location mark

| image = Camelopardalis constellation map.svg

| float = center | width = 250 | position = right

| mark = Red circle.svg | mark_width = 7 | mark_link = HD 117566

| x = 741 | y = 797

}}

| caption = Location of HD 117566 on the map (circled)

}}

{{Starbox observe

| epoch = J2000.0 (ICRS)

| constell = Camelopardalis

| ra = {{RA|03|57|25.44460}}

| dec = {{DEC|+63|04|20.1498}}

| appmag_v = 5.04

}}

{{Starbox character

| type = main sequence

| class = B9 IV or B9.5 V

| u-b = −0.16

| b-v = −0.10

| variable =

}}

{{Starbox astrometry

| radial_v = 4.6{{±|2.8}}

| prop_mo_ra = +7.146

| prop_mo_dec = +6.420

| parallax = 8.4614

| p_error = 0.0947

| parallax_footnote =

| absmag_v = −0.27

}}

{{Starbox detail

| mass = 3.14{{±|0.05}}

| radius = 4.08{{±|0.20}}

| luminosity = 156{{±|12|11}}

| gravity = 3.69{{±|0.06}}

| temperature = 10,520{{±|72|73}}

| metal_fe = −0.20

| rotational_velocity = 85{{±|16}}

| age_myr = 256{{±|20}}

}}

{{Starbox catalog

| names = 22 H. Camelopardalis,{{odlist |BD = +62°628|FK5 = 2281|HD = 24479|HIP = 18505|HR = 1204|SAO = 12969|AG = +62°326|GC = 4730}}

}}

{{Starbox reference

| Simbad = HD+24479

}}

HD 24479, also designated as HR 1204, is a solitary, bluish-white hued star located in the northern circumpolar constellation Camelopardalis. The star is visible to the naked eye with an apparent visual magnitude of 5.04. Based on Gaia DR3 parallax measurements, it is located 385 light years from the Sun. However, it is receding with a somewhat constrained heliocentric radial velocity of {{val|4.6|ul=km/s}}. At its current distance, HD 24479's brightness is diminished by 0.29 magnitudes due to interstellar dust.

In 1932, HD 24479 was identified as a Be star by Olin C. Wilson at the Mount Wilson Observatory. In 1969, astronomer Anne Cowley and her colleauges listed a stellar classification of B9.5 V, matching a B-type main-sequence star. Slettebak (1982) gave it a class of B9 IV, suggesting this instead an evolving subgiant star. Zorec and Royer (2012) model it to be an evolved dwarf star that has completed 85.9% of its main sequence lifetime.

It has an estimated 3.14 times the mass of the Sun and 4.1 times the Sun's radius, which is large for its class. The star is radiating 156 times the Sun's luminosity from its photosphere at an effective temperature of {{val|10250|ul=K|fmt=commas}}. HD 24479 is estimated to be 256 million years old and is spinning quickly with a projected rotational velocity of {{val|85|ul=km/s}}.

References

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{{cite journal | display-authors = 1 | last1 = Stassun | first1 = Keivan G. | last2 = Oelkers | first2 = Ryan J. | last3 = Paegert | first3 = Martin | last4 = Torres | first4 = Guillermo | last5 = Pepper | first5 = Joshua | last6 = Lee | first6 = Nathan De | last7 = Collins | first7 = Kevin | last8 = Latham | first8 = David W. | last9 = Muirhead | first9 = Philip S. | last10 = Chittidi | first10 = Jay | last11 = Rojas-Ayala | first11 = Bárbara | last12 = Fleming | first12 = Scott W. | last13 = Rose | first13 = Mark E. | last14 = Tenenbaum | first14 = Peter | last15 = Ting | first15 = Eric B. | last16 = Kane | first16 = Stephen R. | last17 = Barclay | first17 = Thomas | last18 = Bean | first18 = Jacob L. | last19 = Brassuer | first19 = C. E. | last20 = Charbonneau | first20 = David | last21 = Ge | first21 = Jian | last22 = Lissauer | first22 = Jack J. | last23 = Mann | first23 = Andrew W. | last24 = McLean | first24 = Brian | last25 = Mullally | first25 = Susan | last26 = Narita | first26 = Norio | last27 = Plavchan | first27 = Peter | last28 = Ricker | first28 = George R. | last29 = Sasselov | first29 = Dimitar | last30 = Seager | first30 = S. | last31 = Sharma | first31 = Sanjib | last32 = Shiao | first32 = Bernie | last33 = Sozzetti | first33 = Alessandro | last34 = Stello | first34 = Dennis | last35 = Vanderspek | first35 = Roland | last36 = Wallace | first36 = Geoff | last37 = Winn | first37 = Joshua N. | title = The Revised TESS Input Catalog and Candidate Target List | journal = The Astronomical Journal | date = 9 September 2019 | volume = 158 | issue = 4 | page = 138 | eissn = 1538-3881 | doi = 10.3847/1538-3881/ab3467 | bibcode = 2019AJ....158..138S | arxiv = 1905.10694 | s2cid = 166227927 | hdl = 1721.1/124721 | hdl-access = free | doi-access = free}}

}}

External links

http://www.alcyone.de/cgi-bin/search.pl?object=HR1204 {{Webarchive|url=https://web.archive.org/web/20111117063102/http://www.alcyone.de/cgi-bin/search.pl?object=HR1204 |date=2011-11-17 }}
http://server3.wikisky.org/starview?object_type=1&object_id=1873

Category:B-type main-sequence stars

Category:B-type subgiants

Category:Camelopardalis

Category:Durchmusterung objects

024479

018505

1204