Misplaced Pages

HD 128311 b

Discovery
Discovered by	Butler et al.
Discovery site	California, United States
Discovery date	2002
Detection method	Doppler Spectroscopy
Orbital characteristics
Apastron	1.412 AU (211,200,000 km)
Periastron	0.756 AU (113,100,000 km)
Semi-major axis	1.084 ± 0.006 AU (162,160,000 ± 900,000 km)
Eccentricity	0.303±0.011
Orbital period (sidereal)	453.019 ± 0.404 d (1.24030 ± 0.00111 a)
Average orbital speed	26.2
Inclination	>30
Time of periastron	2450198.691±4.472
Argument of periastron	57.864±3.258
Semi-amplitude	55.627±0.456
Star	HD 128311
Physical characteristics
Mass	≥1.769±0.023 MJ

HD 128311 b is an exoplanet located approximately 54 light-years away in the constellation of Boötes. This planet orbits in an eccentric orbit about 1.084 AU from its star (HD 128311). The planet has a minimum mass of 1.769 Jupiter masses.

References

1. ^ McArthur, Barbara E.; et al. (2014). "Astrometry, Radial Velocity, and Photometry: The HD 128311 System Remixed with Data from HST, HET, and APT". The Astrophysical Journal. 795 (1): 41. Bibcode:2014ApJ...795...41M. doi:10.1088/0004-637X/795/1/41. S2CID 122980723.
2. Butler, R. Paul; et al. (2003). "Seven New Keck Planets Orbiting G and K Dwarfs". The Astrophysical Journal. 582 (1): 455–466. Bibcode:2003ApJ...582..455B. CiteSeerX 10.1.1.7.6988. doi:10.1086/344570. S2CID 17608922.
3. Vogt, Steven S.; et al. (2005). "Five New Multicomponent Planetary Systems" (PDF). The Astrophysical Journal. 632 (1): 638–658. Bibcode:2005ApJ...632..638V. doi:10.1086/432901. S2CID 16509245.

External links

• "Notes for planet HD 128311 b". Extrasolar Planets Encyclopaedia. Retrieved 2008-08-18.
• "HD 128311". Exoplanets. Archived from the original on 2008-05-14. Retrieved 2008-08-18.

v t e Constellation of Boötes
Boötes in Chinese astronomy Boötes Void List of stars in Boötes
Stars	Bayer α (Arcturus) β (Nekkar) γ (Seginus) δ (Princeps) ε (Izar) ζ η (Muphrid) θ (Asellus Primus) ι (Asellus Secundus) κ (Asellus Tertius) λ (Xuange) μ (Alkalurops) ν ν ξ ο π ρ σ τ υ φ χ ψ ω Flamsteed 1 2 3 6 (e) 7 9 10 11 12 (d) 13 14 15 18 20 22 (f) 24 (g) 26 31 32 33 34 38 (h, Merga) 39 40 44 (i) 45 (c) 46 (b) 47 (k) 50 Variable R S T ZZ BL BP BX BY CE CH CI CN CP CR CX CY (101 Vir) DE EK HN HP HD 118508 118889 122563 125040 125351 (A) 125658 126128 126141 126200 126271 127304 127334 127726 128093 128198 129132 129357 130084 130603 130917 131040 131473 131496 (Arcalís) 132029 132406 132563 134064 134335 135438 135530 135944 136418 (Nikawiy) 141399 Other CFBDSIR 1458+10 Gliese 526 HAT-P-4 2MASS J15031961+2525196 LHS 2924 PSR J1544+4937 SDSS J1416+1348 SDSS J1433+1011 TVLM 513-46546 WASP-14 ZTF J153932.16+502738.8
Exoplanets HD 136418 b (Awasis) HAT-P-4b HD 128311 b c HD 132406 b τ Boötis b WASP-14b
Star clusters NGC 5466
Galaxies	NGC 5008 5248 5251 5490 5500 5508 5514 5523 5529 5533 5535 5539 5544 5545 5548 5557 5559 5562 5579 5582 5601 5609 5613 5614 5615 5624 5630 5641 5653 5665 5676 5682 5683 5714 5752 5753 5754 5755 5820 5821 5829 5837 5886 5896 5929 5930 5966 Numbered I II III Other Arp 302 3C 295 3C 299 3C 303 CEERS-2112 CEERS-93316 CLASS B1359+154 Cloverleaf quasar DDO 190 EGS-zs8-1 EGSY8p7 H1426+428 IC 4461 IC 4462 IC 4481 IC 4516 IRAS 13349+2438 LEDA 2108986 MACS 1423-z7p64 Maisie's Galaxy Markarian 463 MS 1512-cB58 OQ 172 PG 1543+489 PGC 1470080 PKS 1345+125 SDSS J135646.10+102609.0 SDSS J1430+2303 Teacup galaxy UGC 9128 UGC 9425 UGC 9684 UGC 9796 ULAS J1342+0928
Galaxy clusters Abell 1795 IDCS J1426.5+3508
Astronomical events GRB 990123 GRB 080319B SCP 06F6 SN 2003fg SN 2005bc SN 2020tlf
Category

This extrasolar-planet-related article is a stub. You can help Misplaced Pages by expanding it.

• v
• t
• e

• Boötes
• Giant planets
• Exoplanets discovered in 2002
• Exoplanets detected by radial velocity
• Exoplanet stubs