PU Puppis

Blue-giant star in the constellation Puppis

This article is about m Puppis and is not to be confused with M Puppis.

PU Puppis

Location of PU Puppis (circled)

Observation data
Epoch J2000      Equinox J2000
Constellation | Puppis
Right ascension | 07h 38m 18.04541s[1]
Declination | −25° 21′ 53.3017″[1]
Apparent magnitude (V) | 4.69[2]
Characteristics
Spectral type | B8III[3]
U−B color index | −0.35[4]
B−V color index | −0.11[4]
Variable type | β Lyr[5]
Astrometry
Radial velocity (Rv)| +41.00[6] km/s
Proper motion (μ)|  RA: −3.03[1] mas/yr
Dec.: −7.42[1] mas/yr
Parallax (π)| 5.27±0.26 mas[1]
Distance| 620 ± 30 ly
(190 ± 9 pc)
Absolute magnitude (MV)| −1.80±0.25
(−1.77 + 5.85)[7]
Absolute bolometric
magnitude (Mbol)| −2.35 + 5.54[7]
Orbit[7]
Period (P)| 2.58237±0.00005 d
Semi-major axis (a)| 13.30 ± 0.40 R☉
Inclination (i)| 56.2°
Details[7]
PU Pup A
Mass| 4.10±0.20 M☉
Radius| 6.60±0.30 R☉
Luminosity| 695±80 L☉
Surface gravity (log g)| 3.40±0.05 cgs
Temperature| 11,500±500 K
Rotational velocity (v sin i)| 123[8] km/s
PU Pup B
Mass| 0.65±0.05 M☉
Radius| 0.90±0.10 R☉
Luminosity| 0.50±0.10 L☉
Surface gravity (log g)| 4.30±0.10 cgs
Temperature| 5,000±350 K
Other designations
m Puppis, PU Pup, CD−25°4828, CCDM J07383-2522AB, GC 10266, HIP 37173, HR 2944, HD 61429, SAO 174175, WDS J07383-2522AB
Database references
SIMBAD| data

PU Puppis (PU Pup) is a class B8III[3] (blue giant) star in the constellation Puppis. Its apparent magnitude is 4.69[2] and it is approximately 620 light years away based on parallax.[1]

A light curve for PU Puppis, plotted from TESS data[9]

It is a β Lyrae variable, ranging from 4.75 to 4.69 magnitude with a period of 2.58 days.[5] The secondary is estimated at 5.6 magnitude, although recent observations have failed to confirm it.[10][11] The primary has a mass of 4.10 solar masses, and is radiating at an effective temperature of 11,500 K. The secondary, with a mass 65% that of the Sun, has a surface temperature of about 5,000 K.[7]

## References

[edit]

1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664\. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
2. ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644. Vizier catalog entry
3. ^ a b Garrison, R. F.; Gray, R. O. (1994). "The late B-type stars: Refined MK classification, confrontation with stromgren photometry, and the effects of rotation". The Astronomical Journal. 107: 1556. Bibcode:1994AJ....107.1556G. doi:10.1086/116967.
4. ^ a b Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
5. ^ a b Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
6. ^ Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; Röser, S.; Schilbach, E. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. arXiv:0705.0878. Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776. S2CID 119323941.
7. ^ a b c d e Erdem, Ahmet; Sürgit, Derya; Banks, Timothy S.; Özkardeş, Burcu; Budding, Edwin (2021). "Absolute parameters of young stars: PU Pup". Research in Astronomy and Astrophysics. 21 (10): 256. arXiv:2107.04650. Bibcode:2021RAA....21..256E. doi:10.1088/1674-4527/21/10/256. S2CID 235795134.
8. ^ Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. S2CID 55586789. Vizier catalog entry
9. ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
10. ^ "VizieR". vizier.cds.unistra.fr. Retrieved 2025-06-13.
11. ^ Tokovinin, Andrei; Mason, Brian D.; Hartkopf, William I. (2014). "Speckle Interferometry at Soar in 2012 and 2013". The Astronomical Journal. 147 (5): 123. arXiv:1403.4970. Bibcode:2014AJ....147..123T. doi:10.1088/0004-6256/147/5/123. S2CID 118489659.

* v
* t
* e

Constellation of Puppis

* List of stars in Puppis
* Puppis in Chinese astronomy

Stars|

| Bayer|

* ζ (Naos)
* ν (Pipit)
* ξ (Azmidi)
* ο
* π (Ahadi)
* ρ (Tureis)
* σ
* τ
* υ1
* υ2
* χ
* L2

|

Flamsteed|

* 1
* 2
* 3 (l)
* 4
* 5
* 6
* 8
* 9
* 10
* 11 (j)
* 12
* 14
* 16
* 18
* 19
* 20
* 21
* 22

Variable|

* R
* T (not variable)
* V
* X
* Z
* RS
* CP
* KQ
* MX (r)
* MY (y3)
* MZ
* NS (h1)
* OU (L1)
* OW (z)
* PT
* PU (m)
* QW (I)
* QX
* QY
* QZ (b)
* V443
* V445
* V468 (d4)
* V598

HR|

* 2157
* 2158
* 2462 (v)
* 2518 (x)
* 2548 (X)
* 2549
* 2608
* 2619 (t)
* 2666 (C)
* 2667
* 2668
* 2672 (H)
* 2691 (D)
* 2702 (A)
* 2727 (E)
* 2762
* 2789 (M)
* 2791 (F)
* 2874
* 2875 (y)
* 2881
* 2906
* 2909 (n)
* 2910 (n)
* 2922 (p)
* 2937 (f)
* 2940 (y2)
* 2948 (k1)
* 2949 (k2)
* 2954 (e)
* 2959
* 2961 (d1)
* 2963 (d2)
* 2964 (d3)
* 3002 (W)
* 3017 (c)
* 3018
* 3046 (Q)
* 3055 (P)
* 3080 (a)
* 3089
* 3090 (J)
* 3116 (N)
* 3131
* 3226
* 3243 (h2)
* 3259
* 3270 (q)
* 3282 (w)

HD|

* 44594
* 48265 (Nosaxa)
* 49798
* 50499
* 53680
* 61005
* 63399
* 63754
* 64568
* 70642

Other|

* 2MASS J08152329-3859234
* NGC 2423-3
* Nova Puppis 1673
* PSR J0737−3039
* PSR J0738−4042
* RX J0822−4300
* WASP-121 (Dilmun)
* WASP-161 (Tislit)
* WD 0810–353
* WD 0816–310

| Exoplanets|

* HD 48265 b (Naqaỹa)
* HD 50499 b
* HD 60532 b
* c
* HD 69830 b
* c
* d
* HD 70642 b
* WASP-121b (Tylos)

|

Star
clusters|

| NGC|

* 2298
* 2439
* 2451
* 2477
* 2509
* 2527
* 2539
* 2546

|

Other|

* Arp-Madore 2
* Collinder 135
* Messier 46
* Messier 47
* Messier 93

Nebulae|

| NGC|

* 2438
* 2440
* 2452
* 2467

|

Other|

* Calabash Nebula
* Gum Nebula

Galaxies|

| NGC|

* 2328
* 2427
* 2525
* 2559
* 2566

|

Category
*[RA:]: Right Ascension
*[Dec.:]: Declination
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template