Coord 2000 | 00405+5632 | Discov num | H 5 18 | Comp | AD | Coord arcsec 2000 | 00 40 30.39 +56 32 14.7 | ||||
Date first | 1781 | Date last | 2021 | Obs | 44 | ||||||
Pa first | 275 | Pa last | 282.8 | P.A. Now (θ) | 282.8° | ||||||
Sep first | 56.2 | Sep last | 71.19 | Sep. Now (ρ) | 71.19" | ||||||
Mag pri | 2.35 | Mag sec | 8.98 | delta mag (ΔM) | 6.63 | Spectral class | K0 (yellow-orange) | ||||
Pri motion ra | +051 | Sec motion ra | -002 | ||||||||
Pri motion dec | -032 | Sec motion dec | -003 | ||||||||
Notes | N L U (See Notes, Linear solution, Proper motion indicates non-physical) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 21609 | 00 40 30 +56 32 15 | BU 1349 AB | 2014 | 6 | 280 | 24.8 | 2.35 | 14.00 | 11.65 | |||
Show | 21609 | 00 40 30 +56 32 15 | BU 1349 AC | 2014 | 9 | 104 | 30.6 | 2.35 | 13.00 | 10.65 | |||
Show | Schedar | 21609 | 00 40 30 +56 32 15 | H 5 18 AD | 2021 | 44 | 283 | 71.2 | 2.35 | 8.98 | 6.63 | <=== |
Common name | Schedar | Constellation | Cassiopeia | SAO | 21609 | HIP | 3179 | ||||
Tycho2 | 3663-02668-1 | Gaia DR2 | 418551920279473536 | HD | 3712 | HR | 168 | ||||
GC | 792 | ADS | 561 | BD | BD+55 139 | Bayer | Alpha Cassiopeiae | ||||
Bayer name | Alp Cas | Flamsteed | 18 Cassiopeiae | Flamsteed name | 18 Cas | FK5 | 21 | ||||
Distance | 69.98 | Distance ly | 228.27 | Bayer greek | α Cas |
Other names | Shedar, Shadar, Schedir, Shedir |
Meaning | chest |
discov_num | notes | refcode |
BU 1349 | alp Cas = 18 Cas = Schedar | |
Mk III Limb-darkened diameter 5.4 +/- 0.4 mas. | MkT1989 | |
Mk III Limb-darkened diameter 5.64 mas. | MkT1991 | |
Mk III Limb-darkened diameter 5.72 +/- 0.08 mas | ||
Mk III Limb-darkened diameter 5.608 +/- 0.056 mas. | MkT2003 | |
NPOI Limb-darkened diameter 5.60 +/- 0.06 mas, | NOI1999 | |
R = 42.1 +/- 1.7 \rsun. | ||
NPOI Limb-darkened diameter 5.65 +/- 0.08 mas. | NOI2001b | |
H 5 18 | AD: H V 18. Also HJ 1993. | |
AD: Optical pair, based on study of relative motion of the components | ||
using the method of apparent motion parameters. | Kiy2008 | |
AD: Rectilinear solution by Hurowitz et al. (2013). | USN2013a |
refcode | metd | author | reference |
Kiy2008 | - | Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. | 2008SvAL...32..405K |
Kiy2008 | SvAL 34, 405, 2008 | ||
MkT1989 | not j | Hutter, D.J., Johnston, K.J., Mozurkewich, D., Simon, R.S., Colavita, M.M., Pan, | 1989ApJ...340.1103H |
MkT1989 | X.P., Shao, M., Hines, B.E., Staelin, D.H., Hershey, J.L., Hughes, J.A. & Kaplan, | . | |
MkT1989 | G.H. | . | |
MkT1989 | ApJ 340, 1103, 1989 | . | |
MkT1991 | not j | Mozurkewich, D., Johnston, K.J., Simon, R.S., Bowers, P.F., Gaume, R., Hutter, | 1991AJ....101.2207M |
MkT1991 | D.J., Colavita, M.M., Shao, M. & Pan, X.P. | . | |
MkT1991 | AJ 101, 2207, 1991 | . | |
MkT2003 | Km - | Mozurkewich, D., Armstrong, J.T., Hindsley, R., Quirrenbach, A., Hummel, C.A., | 2003AJ....126.2502M |
MkT2003 | +not | Hutter, D., Johnston, K.J., Hajian, A., Elias, N.M., II, Buscher, D., & Simon, R. | |
MkT2003 | AJ 126, 2502, 2003 | ||
NOI1999 | not j | Nordgren, T.E., Germain, M.E., Benson, J.A., Mozurkewich, D., Sudol, J.J., Elias, | 1999AJ....118.3032N |
NOI1999 | II, N.M., Hajian, A.R., White, N.M., Hutter, D.J., Johnston, K.J., Gauss, F.S., | . | |
NOI1999 | Armstrong, J.T., Pauls, T.A. & Rickard, L.J. | . | |
NOI1999 | AJ 118, 3032, 1999 | . | |
NOI2001b | not j | Nordgren, T.E., Sudol, J.J. & Mozurkewich, D. | 2001AJ....122.2707N |
NOI2001b | AJ 122, 2707, 2001 | . | |
USN2013a | lin - | Hurowitz, J.L., Hartkopf, W.I., & Mason, B.D. | 2013IAUDS.181....1H |
USN2013a | Inf. Circ. 181, 1, 2013 |
idgroup | discov | author |
1 | BU | Burnham, S.W. (BU 1 - 81) |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
00405+5632 | H 5 18 | AD | 2007 | 36 | 282 | 70.2 | 2.35 | 8.98 | N D | 004030.39+563214.7 | |
00405+5632 | H 5 18 | AD | 2009 | 38 | 282 | 70.4 | 2.35 | 8.98 | N D | 004030.39+563214.7 | |
00405+5632 | H 5 18 | AD | 2010 | 39 | 281 | 71.2 | 2.35 | 8.98 | N D | 004030.39+563214.7 | |
00405+5632 | H 5 18 | AD | 2011 | 41 | 282 | 71.3 | 2.35 | 8.98 | K0 | N D | 004030.39+563214.7 |
00405+5632 | H 5 18 | AD | 2012 | 39 | 282 | 70.5 | 2.35 | 8.98 | K0 | NLD | 004030.39+563214.7 |
00405+5632 | H 5 18 | AD | 2015 | 40 | 283 | 70.3 | 2.35 | 8.98 | K0 | NL U | 004030.39+563214.7 |
00405+5632 | H 5 18 | AD | 2017 | 41 | 282 | 70.6 | 2.35 | 8.98 | K0 | NL U | 004030.39+563214.7 |
00405+5632 | H 5 18 | AD | 2018 | 43 | 283 | 70.4 | 2.35 | 8.98 | K0 | NL U | 004030.39+563214.7 |
00405+5632 | H 5 18 | AD | 2021 | 44 | 283 | 71.2 | 2.35 | 8.98 | K0 | NL U | 004030.39+563214.7 |
Show | date | username | difficulty | separation | pa_estim | interest | notes |
Show | 23/09/23 | Diego Vercelli | mean difficulty | separated | 280 | interesting | The other components were not visible |
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