(1453)
Asteroids with Satellites Database--Johnston's Archive
(1453) Fennia
compiled by Wm. Robert Johnston
last updated 29 May 2019
--Orbital and physical data--
(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
| _dynamical type, primary:_main belt asteroid, Hungaria _orbital data, primary (osculating elements)_[JPL] :semimajor axis **a:**1.896996724 AUorbital period **P:**2.612811469 yr (= 954.329389 d)eccentricity **e:**0.028285674perihelion distance **q:**1.843338894 AUaphelion distance **Q:**1.950654555 AUinclination **i:**23.67304872°argument of perihelion **ω:**255.0735663°ascending node **Ω:**7.097722277°mean anomaly **M:**339.9059667°perihelion passage **TP:2014 Jul 15.2675Epoch:2014 May 23data arc:1938-2014 (1037 obs.)Earth MOID:**0.877773 AUJupiter Tisserand invariant **TJ:3.848 orbital data, secondary: binary dynamical type:**A [M09a]semimajor axis **as:**15 km [*E]separation/primary radius **as/rp:**4.3 [*E]separation/Hill radius **as/rH:**0.015 [*E]orbital period **Ps:**0.9579 ± 0.0004 d [W08a]eccentricity es:<0.03 [P16d]normalized ang. mom. **αL:**0.66 [M09a] | other data, system (combined): absolute mag. **H:**12.5 [MPC]slope parameter **G:**0.32 [W08a]effective diameter **dE:7.23 ± 0.4 km [T04c]geometric albedo:**0.249 ± 0.032 [T04c]color index **U-B:**0.532 [JPL]color index **B-V:**0.928 [JPL]color index **V-R:**0.48 ± 0.03 [W08a] color index **B-R:**1.41 [*D] color index **V-I:0.97 [W08a] taxonomic type:**S (Tholen) [JPL]mass m:?density ρ: (1.6 g/cm3) [*A]Hill radius **rH:**1000 km [*E] other data, primary: diameter **dp:**6.96 ± 0.39 km [*D]rotation period **RPp:**4.4121 ± 0.0001 h [W08a]amplitude in mag., rotational **ΔM:**0.1 ± 0.01 [W08a]amplitude in mag., mutual events **ΔM:**0.08 [W08a]pole direction Β, λ:? , ? other data, secondary: diameter **ds:**1.95 ± 0.18 km [*D]diameter ratio **ds/dp:**>0.28 ± 0.02 [W08a]component mag. difference ΔM:<2.76 ± 0.16 [*D]rotation period RPs:? |
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-- (1453) Fennia --discovery and notes:
Primary discovered 1938 Mar 08 from Turku, Finland by Y. Vaisala. Alternate designation(s): 1938 ED1. Permanent number assigned -.
Named - for Finland [MPC003932].
Companion discovered 2007 Nov 04 by B. D. Warner, A. W. Harris, P. Pravec, R. D. Stephens, D. Pray, W. Cooney, J. Gross, D. Terrell, S. Gajdos, A. Galad, and Yu. Krugly using lightcurve observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA; Space Science Institute; Ondrejov Observatory, Czech Republic; Goat Mountain Astronomical Research Station, Yucca Valley, California, USA; Carbuncle Hill Observatory, Greene, Rhode Island, USA; Sonoita Research Observatory, Sonoita, AZ; Modra Observatory, Slovakia; Main Astronomical Observatory, Kharkiv National University, Ukraine. Announced 2007 Dec 01 [W07b].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Higgins, David, Oey, Julian, & Pravec, Petr 2011, Minor Planet Bulletin Period Determination of Binary Asteroid Targets Observed at Hunters Hill Observatory: May-September 2009
- Warner, Brian D., Harris, Alan W., Pravec, Petr, Stephens, Robert D., Pray, Donald P., Cooney, Walter R., Jr., Gross, John, Terrell, Dirk, Gajdos, S., Galad, A., & Krugly, Yurij 2008, Minor Planet Bulletin 1453 Fennia: A Hungaria Binary
- Warner, B. D., Harris, A. W., Pravec, P., Stephens, R. D., Pray, D., Cooney, W., Gross, J., Terrell, D., Gajdos, S., Galad, A., & Krugly, Yu. 2007, Central Bureau Electronic Telegrams (1453) Fennia
- Schubart, J. 1956, Minor Planet Circulars New Elements of (1453) Fennia
- Schubart, J. 1955, Astronomische Nachrichten Verbesserung der Bahn des kleinen Planeten 1453 Fennia
© 2007-2014, 2019 by Wm. Robert Johnston.
Last modified 29 May 2019.
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