Here we show a simple statistical comparison of data for confirmed exoplanets (exoplanet.eu) and Kepler candidates (Borucki et al., 2011). This analysis was done as a quality test of the data from both sources for the Habitable Exoplanets Catalog (HEC). In this process we identified missing data and corrected a few errors in both datasets. Figure 1 shows histograms for each compared planetary parameter and Table 1 shows more details, including stellar properties. Kepler candidates were corrected as described by Muirhead et al. (2011). A discussions about this comparison will be addressed in the HEC paper.  Table 1. Comparison of the minimum, mean, and maximum value for planetary mass, radius, period, semi-major axis, mean distance, eccentricity, inclination, and equilibrium temperature for 695 confirmed exoplanets and 1235 Kepler candidates. The count column shows how much data for each parameter is available. Note: The stellar results are slightly weighted by the multiple planetary systems, there are only 571 stars in the confirmed exoplanets sample and 997 in the Kepler candidates. Confirmed Exolanets (exoplanet.eu): 695 ------------------------------------------------------------------------------ Property MIN AVG MAX Count ------------------------------------------------------------------------------ Planet Mass (EU): 0.02 893.26 9851.80 689 Planet Radius (EU): 1.42 12.18 24.66 193 Planet Period (days): 0.09 2795.44 730000.00 672 Planet Semi-Major Axis (AU): 0.0004 16.8559 2500.0000 658 Planet Distance: 0.0004 1.4222 114.3021 602 Planet Eccentricity: 0.00 0.20 0.97 611 Planet Inclination: 1.00 76.48 90.00 202 Planet Temperature: 47.52 719.42 2451.50 435 Star Mass (SU): 0.02 1.08 4.50 611 Star Radius (SU): 0.21 2.58 50.39 471 Star Temperature (K): 540.00 5496.02 29300.00 553 Star Luminosity (SU): 0.0030 10.0239 332.3029 455 Star Distance (pc): 3.20 261.44 8500.00 621 Star RA: 0.00 11.81 24.00 695 Star Dec: -83.77 -4.18 79.23 695 Star Magnitude: 1.25 8.54 17.36 410 ------------------------------------------------------------------------------ Confirmed Exoplanets Corrections ------------------------------------------------------------------------------ Corrected 1 times: HD 85512 b Corrected 1 times: Kepler-16 (AB) b Corrected 1 times: Kepler-9 d Corrected 4 times: KOI-730 ------------------------------------------------------------------------------ Kepler Exoplanets Candidates (Borucki et al., 2011): 1235 ------------------------------------------------------------------------------ Property MIN AVG MAX Count ------------------------------------------------------------------------------ Planet Mass (EU): -- -- -- -- Planet Radius (EU): 0.51 4.07 60.10 1233 Planet Period (days): 0.37 35.02 10389.00 1235 Planet Semi-Major Axis (AU): 0.0100 0.1499 9.5140 1235 Planet Distance: 0.0100 0.1499 9.5140 1235 Planet Eccentricity: 0.00 0.00 0.00 1235 Planet Inclination: 90.00 90.00 90.00 1235 Planet Temperature: 84.00 777.13 3257.00 1233 Star Mass (SU): 0.16 0.99 1.84 1195 Star Radius (SU): 0.18 0.97 6.16 1195 Star Temperature (K): 3200.00 5460.66 9034.00 1195 Star Luminosity (SU): 0.0034 1.1018 32.7378 1194 Star Distance (pc): 10.70 645.30 1528.65 1234 Star RA: 18.71 19.41 20.08 1235 Star Dec: 36.58 44.17 52.15 1235 Star Magnitude: 8.22 14.28 16.42 1235 ------------------------------------------------------------------------------ Kepler Exoplanets Candidates Corrections ------------------------------------------------------------------------------ Correted Candidates (Muirhead et al., 2011): 121 ------------------------------------------------------------------------------ |
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(CC) Planetary Habitability Laboratory @ UPR Arecibo, 2020