Coord 2000 | 12266-6306 | Discov num | DUN 252 | Comp | BC | Coord arcsec 2000 | 12 26 36.44 -63 05 58.2 | ||||
Date first | 1826 | Date last | 2020 | Obs | 18 | ||||||
Pa first | 204 | Pa last | 202.6 | P.A. Now (θ) | 202.6° | ||||||
Sep first | 87.0 | Sep last | 88.987 | Sep. Now (ρ) | 88.987" | ||||||
Mag pri | 1.55 | Mag sec | 4.80 | delta mag (ΔM) | 3.25 | Spectral class | B0.5IV (blue-white) | ||||
Pri motion ra | -043 | Sec motion ra | -038 | ||||||||
Pri motion dec | -008 | Sec motion dec | -015 | ||||||||
Notes | N (See Notes) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | Acrux | 251904 | 12 26 36 -63 05 57 | DUN 252 AB | 2020 | 103 | 111 | 3.5 | 1.25 | 1.55 | 0.30 | ||
Show | 251904 | 12 26 36 -63 05 57 | DUN 252 AC | 2020 | 36 | 203 | 89.0 | 1.25 | 4.80 | 3.55 | |||
Show | 251904 | 12 26 36 -63 05 57 | ANT 1 AG | 2014 | 5 | 145 | 58.7 | 1.25 | 12.00 | 10.75 | |||
Show | 251904 | 12 26 36 -63 05 57 | ANT 1 AH | 2013 | 3 | 167 | 47.3 | 1.25 | 13.00 | 11.75 | |||
Show | 251904 | 12 26 36 -63 05 57 | ANT 1 AI | 2013 | 4 | 227 | 63.3 | 1.25 | 12.00 | 10.75 | |||
Show | 251904 | 12 26 36 -63 05 57 | ANT 7 AJ | 2010 | 2 | 344 | 29.6 | 1.25 | 12.00 | 10.75 | |||
Show | 251904 | 12 26 36 -63 05 57 | ANT 7 AK | 2010 | 2 | 218 | 125.2 | 1.25 | 13.00 | 11.75 | |||
Show | 251903 | 12 26 36 -63 05 58 | DUN 252 BC | 2020 | 18 | 203 | 89.0 | 1.55 | 4.80 | 3.25 | <=== | ||
Show | 251903 | 12 26 31 -63 07 20 | TOK 7 CD | 2000 | 2 | 53 | 2.4 | 5.40 | 10.50 | 5.10 | |||
Show | 251903 | 12 26 31 -63 07 20 | TOK 7 CE | 1997 | 1 | 214 | 4.9 | 5.40 | 17.00 | 11.60 | |||
Show | 251903 | 12 26 31 -63 07 20 | TOK 7 CF | 2015 | 2 | 114 | 7.4 | 5.40 | 15.97 | 10.57 |
Constellation | Crux | SAO | 251903 | Tycho2 | 8979-03466-1 | HD | 108250 | ||||
HR | 4729 | GC | 16951 | DM | CP-62 2742 | Flamsteed | 256 Crucis | ||||
Flamsteed name | 256 Cru |
discov_num | notes | refcode |
DUN 252 | alp 1 Cru = Acrux. According to R.G. Aitken, this was discovered by | A__1935f |
the Jesuit missionary, Father Fontenay, at the Cape of Good Hope, in | Fon1733 | |
1685, although the triple was first measured by Dunlop and called | Dun1829 | |
DUN 123AB and DUN 122AC. Spectroscopic binary. CPM with HR 4729 and | ||
HR 4731, so there are at least five components in the system. | ||
Hyperbolic orbit by Hopmann (1960). | Hop1960b | |
q = periastron distance in the true orbit = 0".916 | ||
Both A and B appear to be spectroscopic binaries with undetermined | Bte1967 | |
periods (see Batten 1967). | Fin1970b |
refcode | metd | author | reference |
A__1935f | - | Aitken, R.G. | 1935QB821.A3....... |
A__1935f | The Binary Stars, 1935 | ||
Bte1967 | - | Batten, A.H. | 1967PDAO...13..249B |
Bte1967 | Pub. DAO Victoria 13, 249, 1967 | ||
Dun1829 | Ma - | Dunlop, J. | 1829MmRAS...3..257D |
Dun1829 | MemRAS 3, 257, 1829 | ||
Dun1829 | some measures corrected in LRR2022 | ||
Fin1970b | - | Finsen, W.S. & Worley, C.E. | 1970ROCi..130..203F |
Fin1970b | Republic Obs. Circ. 130, 203, 1970 (Third Orbit Catalog) | ||
Fon1733 | - | Fontenay, Father | ................... |
Fon1733 | Paris, Histoire de l'Academie des Sciences avant son renouvellement en 1699, 2, | ||
Fon1733 | p 19, 1733 | ||
Hop1960b | orb - | Hopmann, J. | 1960MiWie..10..227H |
Hop1960b | Mitt. Sternw. Wien 10, 227-256, 1960 |
idgroup | discov | author |
1 | ANT | Anton, R. |
44 | TOK | Tokovinin, A.A. |
91 | TOK | Tokovinin, A.A., Balega, Y.Y., Pluzhnik, E.A., Shatsky, N.I., Gorynya, N.A., & |
91 | TOK | Weigelt, G. |
105 | TOK | Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N., |
105 | TOK | Martinez, M., & Mondaca, E. |
173 | TOK | Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M., |
173 | TOK | Ratzloff, J. & Walter, F.M. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
12266-6306 | DUN 252 | BC | 2008 | 16 | 205 | 90.6 | 2.30 | 6.00 | N | 122636.40-630559.0 | |
12266-6306 | DUN 252 | BC | 2020 | 18 | 203 | 89.0 | 1.55 | 4.80 | B0.5IV | N | 122636.44-630558.2 |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
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A | B | C | D | E | F | G | H | I | J | |
B | pa=115.2° sep=3.75" | |||||||||
C | pa=202.4° sep=90.19" | pa=204.8° sep=90.08" | ||||||||
D | pa=202.2° sep=88.55" | pa=204.6° sep=88.43" | pa=31.1° sep=1.65" | |||||||
E | pa=202.1° sep=94.41" | pa=204.4° sep=94.28" | pa=196.8° sep=4.25" | pa=200.8° sep=5.86" | ||||||
F | pa=199.9° sep=91.92" | pa=202.2° sep=91.65" | pa=134.8° sep=4.32" | pa=153.7° sep=4.98" | pa=76.7° sep=4.41" | |||||
G | pa=162.6° sep=50.57" | pa=165.9° sep=48.11" | pa=54.6° sep=60.65" | pa=55.2° sep=59.13" | pa=52.3° sep=64.06" | pa=50.5° sep=60.07" | ||||
H | pa=173.9° sep=46.29" | pa=178.0° sep=44.46" | pa=46.4° sep=54.19" | pa=46.9° sep=52.59" | pa=44.3° sep=57.92" | pa=41.8° sep=54.24" | pa=282.3° sep=10.43" | |||
I | pa=206.0° sep=47.92" | pa=210.4° sep=48.12" | pa=18.3° sep=42.46" | pa=17.8° sep=40.85" | pa=18.2° sep=46.71" | pa=13.3° sep=44.56" | pa=278.2° sep=36.45" | pa=276.5° sep=26.06" | ||
J | pa=352.4° sep=28.65" | pa=346.5° sep=30.84" | pa=15.3° sep=115.90" | pa=15.1° sep=114.31" | pa=15.3° sep=120.14" | pa=13.5° sep=118.08" | pa=346.2° sep=78.95" | pa=353.3° sep=74.93" | pa=13.5° sep=73.52" | |
K | pa=199.3° sep=104.84" | pa=201.4° sep=104.52" | pa=181.4° sep=15.53" | pa=184.2° sep=16.99" | pa=175.8° sep=11.50" | pa=195.4° sep=12.95" | pa=224.5° sep=71.05" | pa=216.8° sep=66.09" | pa=193.8° sep=57.50" | pa=193.7° sep=131.03" |
Common name | Acrux | Meaning | a modern contraction of the Bayer designation, coined in the 19th century, but which entered into common use only by the mid-20th century | Coord arcsec 2000 | 122635.94-630556.6 | Mag | 1.25 | ||||
Spectral class | B1V (blue-white) | PmRA | -35.00 | PmDE | -15.0 | SAO | 251904 | ||||
HIP | 60718 | Tycho2 | 8979-03464-1 | HD | 108248 | HR | 4730 | ||||
GC | 16952 | CP | CP-62 2745 | Bayer | Alpha 1 Crucis | Bayer name | Alp1 Cru | ||||
FK5 | 462 |
SAO | 251904 | DelFlag | RA1950 | PmRA1950 | -0.0036 | ||||||
DE1950 | PmDE1950 | -0.017 | Vmag | 1.6 | SpType | B1 | |||||
Double code | Source | 74 | CatNum | 462 | DM | CP-62 2745 | |||||
DMcomp | A | BDsup | HD | 108248 | M HD | 9 | |||||
GC | 16952 | RA1950rad | 3.24544437 | DE1950rad | -1.09645185 | PmRA2000 | -0.0044 | ||||
PmDE2000 | -0.012 |
Catalog | H | HIP | 60718 | Proxy | H | RAhms | 12 26 35.94 | ||||
DEdms | -63 05 56.6 | Vmag | 0.77 | VarFlag | R Vmag | G | |||||
RAdeg | 186.65 | DEdeg | -63.0991 | AstroRef | A | Plx | 10.17 | ||||
CCDM | 12266-6306 | N CCDM | I | Nsys | 1 | Ncomp | 2 | ||||
MultFlag | C | Source | Qual | A | M HIP | AB | |||||
Theta | 113 | Rho | 4.102 | HD | 108248 | BD | |||||
CD | CP | CP-62 2745 | Dm number | -62 2745 | VIred | -0.26 | |||||
SpType | B0.5IV | R SpType | Coord arcsec 2000 | 122635.94-630556.6 |
HIP | 60718 | Sn | 17 | So | 3 | Nc | 2 | ||||
RArad | 3.2576527881 | DErad | -1.1012862951 | Plx | 10.13 | PmRA | -35.83 | ||||
PmDE | -14.86 | E RArad | 0.37 | E DErad | 0.36 | E Plx | 0.5 | ||||
E pmRA | 0.47 | E pmDE | 0.43 | Hpmag | 0.6739 | E Hpmag | 0.0008 | ||||
SHp | 0.008 | VA | 0 | BV | -0.243 | E BV | 0.012 | ||||
VI | -0.26 |
Ccdm | 12266-6306 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | -0.12 | DDEs | 3.7 | ||||||
R dRAs | 10 | Year | Theta | Rho | |||||||
Obs | 3 | Vmag | 1.6 | Sp | B1 | PmNote | * | ||||
PmRA | -25 | PmDE | -17 | Dm number | -62 2745 | Cat1 | CPD | ||||
Name2 | 251904 | Cat2 | SAO | HD | 108248 | M HD | |||||
ADS BDS | M ADS BDS | N IDS | IDS | 12210S6233A | |||||||
HIC | 60718 |
Coord arcsec 2000 | 122636.44-630558.2 | Coord calc | 122636.44-630558.2 | Mag | 1.55 | Spectral class | B0.5IV (blue-white) | ||||
PmRA | -43.00 | PmDE | -8.0 | Calc delta mag | 0.3 |
Ccdm | 12266-6306 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | DRAs | 0.56 | DDEs | 1.9 | ||||||
R dRAs | 10 | Year | 1955 | Theta | 115 | Rho | 4.4 | ||||
Obs | 99 | Vmag | 2.1 | Sp | B3 | PmNote | * | ||||
PmRA | -35 | PmDE | -7 | Dm number | Cat1 | ||||||
Name2 | Cat2 | HD | 108249 | M HD | |||||||
ADS BDS | M ADS BDS | N | N IDS | IDS | 12210S6233B | ||||||
HIC | 60718 |
Coord arcsec 2000 | 122630.88-630720.0 | Coord calc | 122630.88-630720.0 | Mag | 5.4 | Spectral class | B4IV (blue-white) | ||||
PmRA | -38.00 | PmDE | -15.0 | SAO | 251903 | Tycho2 | 8979-03466-1 | ||||
HD | 108250 | HR | 4729 | GC | 16951 | DM | CP-62 2742 | ||||
Flamsteed | 256 Crucis | Flamsteed name | 256 Cru | Calc delta mag | 4.15 |
Tycho2 | 8979-03466-1 | Pflag | RAmdeg | 186.62868845 | DEmdeg | -63.12223768 | |||||
PmRA | -38.0 | PmDE | -15.3 | E RAmdeg | 3 | E DEmdeg | 3 | ||||
E pmRA | 0.9 | E pmDE | 1.0 | EpRAm | 1991.51 | EpDEm | 1991.41 | ||||
Num | 15 | Q RAmdeg | 1.7 | Q DEmdeg | 1.7 | Q pmRA | 1.8 | ||||
Q pmDE | 1.7 | BTmag | 4.644 | E BTmag | 0.014 | VTmag | 4.799 | ||||
E VTmag | 0.009 | Prox | 900 | TYC | T | HIP | |||||
CCDM | RAdeg | 186.62888111 | DEdeg | -63.12220167 | EpRA 1990 | 1.74 | |||||
EpDE 1990 | 1.57 | E RAdeg | 3.2 | E DEdeg | 3.3 | Posflg | |||||
Corr | 0.0 |
SAO | 251903 | DelFlag | RA1950 | PmRA1950 | -0.0051 | ||||||
DE1950 | PmDE1950 | -0.03 | Vmag | 5.1 | SpType | B5 | |||||
Double code | Source | 70 | CatNum | 16951 | DM | CP-62 2742 | |||||
DMcomp | BDsup | HD | 108250 | M HD | 0 | ||||||
GC | 16951 | RA1950rad | 3.24508305 | DE1950rad | -1.09685849 | PmRA2000 | -0.0059 | ||||
PmDE2000 | -0.025 |
Ccdm | 12266-6306 | RComp | Comp | C | Note1 | ||||||
Note2 | Discov num | DRAs | -5.17 | DDEs | -80.4 | ||||||
R dRAs | 10 | Year | 1826 | Theta | 202 | Rho | 90.1 | ||||
Obs | 12 | Vmag | 5.1 | Sp | B5 | PmNote | * | ||||
PmRA | -42 | PmDE | -22 | Dm number | -62 2742 | Cat1 | CPD | ||||
Name2 | 251903 | Cat2 | SAO | HD | 108250 | M HD | |||||
ADS BDS | M ADS BDS | N IDS | IDS | 12210S6233C | |||||||
HIC |
Coord arcsec 2000 | 122631.01-630718.6 | Mag | 10.5 | Calc delta mag | 9.25 | Calc coord | yes |
Coord arcsec 2000 | 122630.70-630724.1 | Mag | 17 | Calc delta mag | 15.75 | Calc coord | yes |
Coord arcsec 2000 | 122631.33-630723.0 | Mag | 15.97 | PmRA | -7.00 | PmDE | 0.0 | ||||
Calc delta mag | 14.72 | Calc coord | yes |
Coord arcsec 2000 | 122638.17-630644.9 | Mag | 12 | Calc delta mag | 10.75 | Calc coord | yes |
Coord arcsec 2000 | 122636.67-630642.6 | Mag | 13 | Calc delta mag | 11.75 | Calc coord | yes |
Coord arcsec 2000 | 122632.85-630639.7 | Mag | 12 | Calc delta mag | 10.75 | Calc coord | yes |
Coord arcsec 2000 | 122635.38-630528.2 | Mag | 12 | Calc delta mag | 10.75 | Calc coord | yes |
Coord arcsec 2000 | 122630.82-630735.5 | Mag | 13 | Calc delta mag | 11.75 | Calc coord | yes |