147 Protogeneia

Main-belt asteroid September 2018 yes #D6D6D6 147 Protogeneia 147Protogeneia (Lightcurve Inversion).png A three-dimensional model of 147 Protogeneia based on its light curve Lipót Schulhof 10 July 1875 (147) Protogeneia A875 PA Protogeneia , p r ɒ t oʊ dʒ ᵻ ˈ n iː ə'Protogenea' in Noah Webster (1884) A Practical Dictionary of the English Language Main belt http://ftp.lowell.edu/pub/elgb/astorb.html astorb The Asteroid Orbital Elements Database Lowell Observatory 31 July 2016 (JD 2457600.5) 3.13512 AU Gm on 3.04727 AU Gm on 3.2230 AU Gm on on 0.028020 5.55 yr (2027.6 d) 1.9309° 248.357° 100.692° 92.9051° 16.82 km/s 66.465 2.55 km59.22 ± 5.225 km (composite estimate) 1.12 0.39 18 kgCalculated from its standard gravitational parameter GM = 0.075 0.026 km3/s2. 0.91 g/cm3Assuming a diameter of 133 km. 0.0371 m/s² 0.0703 km/s C 7.8528 h d on on 12.4 to 14.5 8.278.8 0.0492 0.004 ~157 K 0.177551 ms / day 132.02 yr (48222 d) 0 2.03996 AU Gm on 1.90385 AU Gm on 3.211 147 Protogenia is a main belt asteroid that was discovered by Hungarian astronomer Lipót Schulhof on July 10, 1875, from the Vienna Observatory; it was his only asteroid discovery. Its name is Greek for "first born" and was chosen by Karl L. Littrow in allusion to the fact that this was the first asteroid discovered by an astronomer who was already known for work in other fields of astronomy. This object has a low orbital eccentricity and inclination. With an orbital period roughly double that of the planet Jupiter, it has been identified as a member of the Hecuba group of asteroids that share a 2:1 mean-motion orbital resonance with the giant planet. Based upon its spectrum, it has a Tholen classification as a C-type asteroid, which indicates that it has a dark surface and probably a primitive composition of carbonaceous material. Photometric observations of this asteroid at the Altimira Observatory in 2004 gave a light curve with a period of 7.8528 ± 0.0008 hours and a brightness variation of 0.28 in magnitude. A photometric study was reported in 2006 from the Yunnan Observatory in China, finding a matching period of 7.852 hours and a brightness variation of 0.25 magnitude. They estimate the ratio of the lengths for the asteroid's major and minor axes is at least 1.26:1. There is one reported stellar occultation by Protogeneia, on May 28, 2002, from Texas, United States.December 2010 Notes References Donald K. Yeomans 147 Protogeneia JPL Small-Body Database Browser NASA Jet Propulsion Laboratory https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=147 6 May 2016 . Lutz D. Schmadel Dictionary of Minor Planet Names Springer 28 5th 2003 3540002383 https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA28 . B. Carry Density of asteroids 73 1 98–118 December 2012 10.1016/j.pss.2012.03.009 2012P&SS...73...98C . 1203.4336 Planetary and Space Science See Table 1. Buchheim Robert K. Lightcurve of 147 Protogeneia 32 2 35–36 June 2005 2005MPBu...32...35B . The Minor Planet Bulletin 1052-8091 Bel'Skaya I. N. Kiselev N. N. Lupishko D. F. Chernova G. P. 1 Polarimetry of CMEU asteroids. II. A peculiarity of M-type asteroids 7 6 8–11 1991 1991KPCB....7f...8B . Kinematics and Physics of Celestial Bodies Levy Sophia H. Mean Elements and Perturbations by the Berkeley Tables of Minor Planets of the Hecuba Group 51 302 225 August 1939 10.1086/125066 1939PASP...51..224L . Publications of the Astronomical Society of the Pacific Zhang Xi-Liang Wang Xiao-Bin Zhang Li-Yun 55204167 1 CCD Photometry of Asteroid (147) Protogeneia 6 729–732 December 2006 2006ChJAA...6..729Z . Chinese Journal of Astronomy & Astrophysics 10.1088/1009-9271/6/6/12 6 free Fuentes-Muñoz Oscar Farnocchia Davide Giorgini Jon D. Park Ryan S. 2025-12-01 Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release The Astronomical Journal 170 6 353 10.3847/1538-3881/ae0cc9 0004-6256 free 2025AJ....170..353F 283347135 External links 147 146 Lucina 147 148 Gallia 000147 Category:Discoveries by Lipót Schulhof Category:Named minor planets 000147 000147 000147 18750710