2007A&A...462.1165S


Query : 2007A&A...462.1165S

2007A&A...462.1165S - Astronomy and Astrophysics, volume 462, 1165-1170 (2007/2-2)

Trojan planets in HD 108874?

SCHWARZ R., DVORAK R., PILAT-LOHINGER E., SUELI A. and ERDI B.

Abstract (from CDS):

It turned out recently that, in addition to a large planet with a semimajor axis a ∼1AU and a low eccentricity (e∼0.07), the extrasolar planetary system HD 108874 harbors another massive planet with 2.43AU<a<2.93AU. The inner planet is orbiting the G5 host star in the habitable zone (=HZ); so that we could established stable regions for Earth-like Trojan planets. We integrated some 105 orbits of fictitious Trojans around the Lagrangian points for up to 107 years and checked the stability of the orbital elements and their chaoticity with the aid of the Fast Lyapunov Indicator. It turns out that this multiplanetary system is the first one where - with the uncertainties in eccentricity and semimajor axes of the outer planet - the existence of Trojan terrestrial planets in stable orbits in the HZ is possible for some combinations of the orbital parameters.

Abstract Copyright:

Journal keyword(s): celestial mechanics - chaos - stars: planetary systems

Simbad objects: 22

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Number of rows : 22
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HD 12661b Pl 02 04 34.2883519451 +25 24 51.514208219           ~ 65 1
2 HD 12661c Pl 02 04 34.2883519451 +25 24 51.514208219           ~ 54 1
3 * iot Hor PM* 02 42 33.4666679022 -50 48 01.055138166   5.97 5.40     F8V 368 1
4 HD 20367 PM* 03 17 40.0468295160 +31 07 37.360398072   6.962 6.399     F8V 126 1
5 HD 23079 PM* 03 39 43.0959995592 -52 54 57.017412036   7.68 7.11     F9.5V 157 1
6 * eps Ret PM* 04 16 29.0281470260 -59 18 07.755891304 6.59 5.52 4.44 3.62 3.08 K2III 226 1
7 HD 28185 PM* 04 26 26.3227063776 -10 33 02.947149108   8.52 7.81     G6.5IV-V 174 1
8 HD 82943b Pl 09 34 50.7352288445 -12 07 46.363303103           ~ 94 1
9 HD 82943c Pl 09 34 50.7352288445 -12 07 46.363303103           ~ 81 1
10 HD 93083 PM* 10 44 20.9150176896 -33 34 37.287898176   9.27 8.33     K2IV-V 99 1
11 HD 108874 PM* 12 30 26.8817398344 +22 52 47.377485192   9.49   8.3   G9V 149 1
12 HD 108874b Pl 12 30 26.8817523074 +22 52 47.380606770           ~ 45 1
13 HD 108874c Pl 12 30 26.8817523074 +22 52 47.380606770           ~ 34 1
14 HD 114783 PM* 13 12 43.7855575272 -02 15 54.130663296 9.137 8.469 7.550 7.053 6.627 K1V 178 1
15 * 23 Lib PM* 15 13 28.6669233518 -25 18 33.653388418   7.168 6.46 6.43   G6IV-V 283 1
16 * mu. Ara b Pl 17 44 08.7036342277 -51 50 02.591049123           ~ 84 2
17 * mu. Ara c Pl 17 44 08.7036342277 -51 50 02.591049123           ~ 81 2
18 * mu. Ara d Pl 17 44 08.7036342277 -51 50 02.591049123           ~ 60 2
19 HD 188015 PM* 19 52 04.5426976824 +28 06 01.345077360   8.95 8.23     G5IV 86 1
20 BD-15 6290d Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 147 1
21 BD-15 6290c Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 183 1
22 BD-15 6290b Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 238 1

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2022.11.28-12:09:25

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