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 AU
|
orbital period P: |
2.612811469 yr (= 954.329389 d)
|
eccentricity e: |
0.028285674
|
perihelion distance q: |
1.843338894 AU
|
aphelion distance Q: |
1.950654555 AU
|
inclination i: |
23.67304872°
|
argument of perihelion ω: |
255.0735663°
|
ascending node Ω: |
7.097722277°
|
mean anomaly M: |
339.9059667°
|
perihelion passage TP: |
2014 Jul 15.2675
|
Epoch: |
2014 May 23
|
data arc: |
1938-2014
(1037 obs.)
|
Earth MOID: |
0.877773 AU
|
Jupiter 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: |
?
|
|
|
--
(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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