(47171) 1999 TC36, S/2001 (47171) 1, and third component
compiled by Wm. Robert Johnston
last updated 6 December 2009
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: |
39.2280453217444 AU
| |
orbital period P: |
245.6989 y (=89743 d)
| |
eccentricity e: |
0.221336017210763
| |
perihelion distance q: |
30.5454660072662 AU
| |
aphelion distance Q: |
47.91062464 AU
| |
inclination i: |
8.41541631958719°
| |
argument of perihelion omega: |
295.351141968415°
| |
ascending node OMEGA: |
97.1231020762021°
| |
mean anomaly M: |
344.706976754838°
| |
perihelion passage TP: |
2015-07-09.2754936
| |
Epoch: |
30 JAN 2005
| |
data arc: |
1999-2003 (85 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
7,640 ± 460 km [M04b]
7,720 km [S06a]
| |
semimajor axis/primary radius a/Rp: |
(40)
| |
orbital period P: |
50.38 ± 0.5 d [M04b]
| |
eccentricity e: |
?
|
orbital data, third component:
|
semimajor axis a: |
867 km [B09c]
| |
semimajor axis/primary radius a/Rp: |
(6)
| |
orbital period P: |
1.9 d [B09c]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
379 (± 61/51) km [S06a]
281 (± 45/38) km [B09c]
| |
absolute magnitude H: |
4.73 [JPL]
| |
rotation period: |
>8 h? [P02b]
6.21 h? [O03b]
1.9 d? [B09c]
| |
amplitude delta M: |
<0.07 [L06a]
0.06? [O03b]
| |
color index B-V: |
1.01 ± 0.04 [B05c]
| |
color index V-R: |
0.69 ± 0.03 [B05c]
| |
color index R-I: |
0.63 ± 0.05 [B05c]
| |
color index V-J: |
2.32 ± 0.07 [M03a]
| |
color index V-H: |
2.74 ± 0.03 [B05c]
| |
slope parameter G: |
(0.15) [a]
| |
geometric albedo: |
0.079 ±0.031/0.024 [S06a]
| |
mass (system): |
(1.39 ± 0.25)x1019 kg [M04b]
(1.44 ± 0.22)x1019 kg [S06a]
| |
density: |
0.5 ± 0.3/0.2 g/cm3 [S06a]
| |
type: |
P [M03a]
| |
BBFB type: |
RR [B05c]
|
other data, secondary:
|
diameter: |
142 (± 23/19) km [S06a]
135 (± 22/18) km [B09c]
| |
diameter ratio Ds/Dp: |
(0.374 ± 0.004) [M05b]
| |
component magnitude difference: |
(2.14) [M05b]
| |
rotation period: |
?
|
other data, third component:
|
diameter: |
258 (± 41/35) km [B09c]
| |
diameter ratio Ds/Dp: |
(0.92) [B09c]
| |
component magnitude difference: |
(0.18) [B09c]
| |
rotation period: |
(1.9 d?)
|
|
--(47171) 1999 TC36--discovery and notes:
Primary discovered 1 October 1999 by E. P. Rubenstein and L.-G. Strolger from Kitt Peak, Arizona, USA.
Secondary discovered from 8 December 2001 observations by C. A. Trujillo and M. E. Brown using the Hubble Space Telescope; announced 10 January 2002.
The primary was itself hypothesized as binary in 2005 based on lightcurve observations. Analysis of Hubble Space Telescope imagery by Seth Jacobson and J. L. Margot showed the primary to be elongated in a manner best explained if it was two unresolved components; results announced October 2007. This was confirmed in 2009 based on further analysis of Hubble Space Telescope imagery by Susan D. Benecchi, K. S. Noll, W. M. Grundy, and H. F. Levison, results announced September 2009.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Barucci, M. A., Merlin, F., & Dotto, E. 2004, AAS/Division for Planetary Sciences Meeting Abstracts Heterogeneity/homogeneity on the TNO and Centaur surfaces
- Margot, J. L., Brown, M. E., Trujillo, C. A., & Sari, R. 2004, AAS/Division for Planetary Sciences Meeting Abstracts HST observations of Kuiper Belt binaries
- Boehnhardt, Hermann, Barucci, Antonella, Delsanti, Audrey, De Bergh,
Catherine, Doressoundiram, Alain, Romon, Jennifer, Dotto, Elisabetta,
Tozzi, Gianpaolo, Lazzarin, Monica, Fornasier, Sonia, Peixinho, Nuno,
Hainaut, Olivier, Davies, John, Rousselot, Philippe, Barrera, Luis, Birkle,
Kurt, Meech, Karen, Ortiz, JoseLuis, Sekiguchi, Tomohiko, Watanabe,
Jun-ichi, Thomas, Nick, & West, Richard 2003, Earth Moon and Planets
Results from the Eso Large Program on Transneptunian Objects and Centaurs
- Altenhoff, W. J., Bertoldi, F., & Menten, K. M. 2004, Astronomy and Astrophysics Size estimates of some optically bright KBOs
- Dotto, E., Barucci, M. A., Boehnhardt, H., Romon, J., Doressoundiram, A., Peixinho, N., de Bergh, C., & Lazzarin, M. 2003, Icarus Searching for water ice on 47171 1999 TC36, 1998 SG35, and 2000 QC243: ESO large program on
TNOs and centaurs*
- Ortiz, J. L., Gutiérrez, P. J., Casanova, V., & Sota, A. 2003, Astronomy and Astrophysics A study of short term rotational variability in TNOs and Centaurs from Sierra Nevada Observatory
- Licandro, J., Campins, H., de Leon Cruz, J., Gil-Hutton, R., & Lara-Lopez, L. M. 2003, AAS/Division for Planetary Sciences Meeting Near infrared spectroscopy of TNOs, Centaurs and comet nuclei.
- Dotto, E., Barucci, M. A., Boehnhardt, H., Romon, J., Doressoundiram, A., Peixinho, N., de Bergh, C., & Lazzarin, M. 2003, Icarus Searching for water ice on 47171 1999 TC36, 1998 SG35, and 2000 QC243: ESO large program on TNOs and centaurs*
- Peixinho, N., Doressoundiram, A., & Romon-Martin, J. 2002, New Astronomy Visible-IR colors and lightcurve analysis of two bright TNOs: 1999 TC36 and 1998 SN165
- Delsanti, A. C., Boehnhardt, H., Barrera, L., Meech, K. J., Sekiguchi, T., & Hainaut, O. R. 2001, Astronomy and Astrophysics BVRI Photometry of 27 Kuiper Belt Objects with ESO/Very Large Telescope
- Brown, M. E. 2000, American Astronomical Society, DPS meeting #32, #20.08 Near-infrared spectroscopy of Kuiper belt objects
- Griffin, I. P., Brady, N., Greatrex, R., Bredenkamp, T., & Marsden, B. G. 2000, Minor Planet Electronic Circ., 2000-O37 (2000). 1999 TC36
- Luu, J. X., Jewitt, D. C., Trujillo, C. A., Tholen, D., Sheppard, S., Rubenstein, E. P., Smith, C. R., Strolger, L.-G., Hergenrother, C. W., & Marsden, B. G. 1999, Minor Planet Electronic Circ., 1999-Y19 (1999). 1999 RV214
© 2003-2006, 2009 by Wm. Robert Johnston.
Last modified 6 December 2009.
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