Asteroids with Satellites Database--Johnston's Archive
(4440)
Tchantches
compiled by Wm. Robert Johnston
last updated
21 September 2014
--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: |
1.921293145 AU
| |
orbital period P: |
2.663168541 yr
(= 972.7223096 d)
| |
eccentricity e: |
0.077206165
| |
perihelion distance q: |
1.77295747 AU
| |
aphelion distance Q: |
2.069628819 AU
| |
inclination i: |
21.3515413°
| |
argument of perihelion ω: |
224.816853°
| |
ascending node Ω: |
283.354620°
| |
mean anomaly M: |
336.461136°
| |
perihelion passage TP: |
2014 Jul 25.6021
| |
Epoch: |
2014 May 23
| |
data arc: |
1984-2014
(840 obs.)
| |
Earth MOID: |
0.815616 AU
| |
Jupiter Tisserand invariant TJ: |
3.837
|
orbital data, secondary:
|
semimajor axis as: |
3.8
km
[*E]
| |
separation/primary radius as/rp: | 3.7 [*E] | |
separation/Hill radius as/rH: | 0.014 [*E] | |
orbital period Ps: |
0.7788
± 0.002
d [W13d]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.6
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
2.09
± 0.59
km [M11b]
| |
geometric albedo: |
1
± 0.063
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
280 km [*E]
|
other data, primary:
|
diameter dp: |
2.03
± 0.57
km [*D]
| |
axial ratios a/b, b/c: | 1.3, ? [W13d] | |
rotation period RPp: |
2.78836
± 0.00004
h [W13d]
| |
amplitude in mag., rotational ΔM: |
0.29
[W13d]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.51
± 0.16
km [*D]
| |
diameter ratio ds/dp: |
>0.25
± 0.03
[W13d]
| |
component mag. difference ΔM: |
<3.0
± 0.3
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(4440) Tchantches
--discovery and notes:
Primary discovered
1984 Dec 23
from
Haute Provence, France
by
F. Dossin.
Alternate designation(s):
1984 YV
.
Permanent number assigned 1990 Apr 10.
Named 1998 Dec 08 for the folklore character Tchantches [MPC33385].
Companion discovered
2005 Sep 27
by B. D. Warner
using
lightcurve
observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA.
Announced
2013 Jul [W13d].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Warner, Brian D. 2014, Minor Planet Bulletin Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2013 September-December
- Warner, Brian D. 2013, Minor Planet Bulletin Something Old, Something New: Three Binary Discoveries from the Palmer Divide Observatory
- Warner, Brian D. 2011, Minor Planet Bulletin Lightcurve Analysis at the Palmer Divide Observatory: 2010 June-September
- Warner, Brian D. & Higgins, David 2009, Minor Planet Bulletin Lightcurve Analysis of Hungaria Asteroid 4440 Tchantches
- Warner, Brian D., Pravec, Petr, Kusnirák, Peter, Foote, Cindy, Foote, Jerry, Galád, Adrián, Gajdos, Stefan, Kornos, Leos, Világi, Jozef, Higgins, David, Nudds, Shannon, Kugly, Yurij N., & Gaftonyuk, Ninel M. 2006, Minor Planet Bulletin Lightcurves analysis for Hungaria asteroids 3854 George, 4440 Tchantches and 4674 Pauling
- Warner, Brian D. 2003, Minor Planet Bulletin Lightcurve analysis for asteroids 607 Jenny, 1177 Gonnessia 4440 Tchantches, 4896 Tomoegozen, and (4995) 1984 QR
©
2013, 2014
by Wm. Robert Johnston.
Last modified
21 September 2014.
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