Asteroids with Satellites Database--Johnston's Archive
(26471)
Tracybecker
compiled by Wm. Robert Johnston
last updated
21 June 2016
--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:
Mars crossing asteroid, Hungaria
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.917977412 AU
| |
orbital period P: |
2.656277445 yr
(= 970.2053366 d)
| |
eccentricity e: |
0.154476722
| |
perihelion distance q: |
1.62169455 AU
| |
aphelion distance Q: |
2.214260275 AU
| |
inclination i: |
19.6937661°
| |
argument of perihelion ω: |
58.829546°
| |
ascending node Ω: |
268.761803°
| |
mean anomaly M: |
286.265853°
| |
perihelion passage TP: |
2014 Dec 07.71461
| |
Epoch: |
2014 May 23
| |
data arc: |
1951-2013
(716 obs.)
| |
Earth MOID: |
0.668512 AU
| |
Jupiter Tisserand invariant TJ: |
3.842
|
orbital data, secondary:
|
semimajor axis as: |
18
km
[*E]
| |
separation/primary radius as/rp: | 6.3 [*E] | |
separation/Hill radius as/rH: | 0.025 [*E] | |
orbital period Ps: |
1.637
± 0.0004
d [W10c]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.2
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
6.05
± 0.44
km [U11a]
| |
geometric albedo: |
0.304
± 0.046
[U11a]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
730 km [*E]
|
other data, primary:
|
diameter dp: |
5.69
± 0.41
km [*D]
| |
rotation period RPp: |
2.687
± 0.000
h [W10c]
| |
amplitude in mag., rotational ΔM: |
0.22
[W09e]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
2.05
± 0.19
km [*D]
| |
diameter ratio ds/dp: |
0.36
± 0.02
[W10c]
| |
component mag. difference ΔM: |
2.2
± 0.1
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(26471) Tracybecker
--discovery and notes:
Primary discovered
2000 Jan 08
from
Socorro, New Mexico, USA
by
LINEAR.
Alternate designation(s):
2000 AS152,
1951 YZ1.
Linked to prediscovery observations from 1951 Dec 27.
Permanent number assigned 2001 Jul 05.
Companion discovered
2009 Jul 13
by B. D. Warner, A. W. Harris, and D. Pray
using
lightcurve
observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA; Space Science Institute, La Canada, California, USA; Carbuncle Hill Observatory, West Brookfield, Massachusetts, USA.
Announced
2009 Jul 20 [W09e].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Warner, Brian D. 2013, Minor Planet Bulletin Seeing Double Old and New: Observations and Lightcurve Analysis at the Palmer Divide Observatory of Six Binary Asteroids
- Warner, Brian D., Pravec, Petr, Kusnirak, Peter, Hornoch, K., Harris, Alan, Stephens, Robert D., Casulli, Silvano, Cooney, Walter R., Jr., Gross, John, Terrell, Dirk, Durkee, Russ, Gajdos, Stefan, Galad, Adrian, Kornos, Leonard, Toth, Juraj, Vilagi, Josef, Husarik, Marek, Marchis, Franck, Reiss, A. E., Polishook, David, Roy, Rene, Behrend, Raoul, Pollock, Joseph, Reichart, Daniel, Ivarsen, Kevin, Haislip, Josh, Lacluyze, Aaron, Nysewander, Melissa, Pray, Donald P., & Vachier, Fred 2010, Minor Planet Bulletin A Trio of Hungaria Binary Asteroids
- Reiss, A. E., Marchis, F., & Emery, J. P. 2009, AGU Fall Meeting Abstracts Visible-Wavelength Integrated Spectroscopy of Binary Asteroids
- Warner, B. D., Harris, A. W., & Pray, D. 2009, Central Bureau Electronic Telegrams (26471) 2000 AS152
- Warner, Brian D. 2008, Minor Planet Bulletin Asteroid Lightcurve Analysis at the Palmer Divide Observatory: December 2007 - March 2008
©
2009-2014, 2016
by Wm. Robert Johnston.
Last modified
21 June 2016.
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