(164121) 2003 YT1
compiled by Wm. Robert Johnston
last updated 1 October 2007
Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):
orbital data, primary (osculating elements) [JPL]:
|
semimajor axis a: |
1.109968710469 AU
| |
orbital period P: |
1.1694 y (=427.1 d)
| |
eccentricity e: |
0.291870657874429
| |
perihelion distance q: |
0.786001412724378 AU
| |
aphelion distance Q: |
1.43393601 AU
| |
inclination i: |
44.0627336633269°
| |
argument of perihelion omega: |
90.9565996691929°
| |
ascending node OMEGA: |
38.3701701921753°
| |
mean anomaly M: |
94.0240013054072°
| |
perihelion passage TP: |
2005-04-28.4419897
| |
Epoch: |
18 AUG 2005
| |
data arc: |
1982-2005 (366 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(3.4 km)
| |
semimajor axis/primary radius a/Rp: |
(6.4)
| |
orbital period P: |
36.7±1.8 h [B06f]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(1.06±0.06 km)
| |
absolute magnitude H: |
16.23 [JPL]
| |
rotation period: |
2.343 h [OOa]
| |
amplitude delta M: |
0.16 [OOa]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(0.50?)
| |
volume: |
0.63±0.10 km3 [B06f]
| |
mass: |
(1.27±0.39)x1012 kg [B06f]
| |
density: |
2.01±0.70 g/cm3 [B06f]
| |
type: |
?
|
other data, secondary:
|
diameter: |
(0.19 km)
| |
diameter ratio Ds/Dp: |
0.18 [OOa]
| |
component magnitude difference: |
(3.7)
| |
rotation period: |
?
|
|
--(164121) 2003 YT1--discovery and notes:
Primary discovered 18 December 2003 by the Catalina Sky Survey.
Companion reported 6 May 2004, suspected based on lightcurve observations by Ondrejov Observatory, confirmed by radar observations from Arecibo Observatory.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Brooks, Heidi E. 2006, American Astronomical Society Meeting Abstracts Orbits of Binary Near-Earth Asteroids from Radar Observations
- Russell, K. S., Barrow, J., Phillips, N., & Williams, G. V. 2005, Minor
Planet Electronic Circulars 2003 YT1
- Larson, S. M., Grauer, A. D., Beshore, E., Christensen, E., Pravec, P.,
Kaasalainen, M., Nolan, M. C., Howell, E. S., Hine, A. A., Galad, A.,
Gajdos, B. S., Kornos, C. L., & Vilagi, D. J. 2004, AAS/Division for
Planetary Sciences Meeting Abstracts Physical Characteristics of the Binary
PHA 2003 YT1
- Abell, P. A., Gaffey, M. J., & Hardersen, P. S. 2004, AAS/Division for
Planetary Sciences Meeting Abstracts Compositional Results of Binary
Near-Earth Asteroid 2003 YT1: A Basaltic Achondrite
- Nolan, M. C., Howell, E. S., & Miranda, G. 2004, AAS/Division for Planetary
Sciences Meeting Abstracts Radar Images of Binary Asteroid 2003 YT1
- Tichy, M., Kocer, M., Yeung, W. K. Y., Kusnirak, P., Larson, S., Beshore,
E., Christensen, E., Hill, R., Kolar, S., McLean, D., McGaha, J. E.,
Holvorcem, P. R., Schwartz, M., & Spahr, T. B. 2003, Minor Planet
Electronic Circulars 2003 YT1
© 2004-2005, 2007 by Wm. Robert Johnston.
Last modified 1 October 2007.
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