HD 40307 d

Planetbox begin
name = HD 40307 dPlanetbox star
star = HD 40307
constell = Pictor
RA = RA|05|54|04.2409SIMBAD link|HD+40307|HD 40307, entry, SIMBAD. Accessed on line June 18, 2008.]
DEC = DEC|−60|01|24.498
dist_ly = 41.8 ± 0.3
dist_pc = 12.83 ± 0.09
class = K2.5VPlanetbox orbit
semimajor = 0.134cite journal|author= M. Mayor, S. Udry, C. Lovis, F. Pepe, D. Queloz, W. Benz, J.-L. Bertaux, F. Bouchy, C. Mordasini, D. Segransan|title=The HARPS search for southern extra-solar planets. XIII. A planetary system with 3 Super-Earths (4.2, 6.9, & 9.2 Earth masses)|journal= "Submitted to" Astronomy & Astrophysics|bibcode=2008arXiv0806.4587M|url=http://www.arxiv.org/abs/0806.4587|accessdate=2008-06-30]
eccentricity = 0.0
period = 20.46 ± 0.01
inclination =
long_peri =
arg_peri =
t_peri =
t_transit =
t_approach =
semi-amp = 4.55 ± 0.12Planetbox character
mass =
mass_earth = >9.2
radius =
radius_earth =
density =
gravity =
gravity_earth =
temperature = Planetbox discovery
discovery_date = June 2008
discoverers = Mayor et al.
discovery_method = radial velocity, using HARPS
discovery_site = La Silla Observatory, Chile
discovery_status = Announced HD 40307 d is a super-Earth orbiting the star HD 40307, located 42 light-years away in the direction of the southern constellation Pictor. It was discovered by the radial velocity method, using the HARPS spectrograph system. Its discovery was announced in June 2008. [cite news|url=http://news.bbc.co.uk/1/hi/sci/tech/7457307.stm|title=Trio of 'super-Earths' discovered |coauthors=Mayor et al.|date=2008-06-16|work=BBC news|accessdate=2008-06-16]

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