* Astronomy

Members Login
Post Info TOPIC: Asteroid (47171) 1999 TC36


L

Posts: 131433
Date:
Kuiper Belt Object (47171) 1999 TC36
Permalink  
 


Kuiper Belt Object (47171) 1999 TC36 is at Opposition (29.572 AU) on the 25th October 2014

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     Mag
2014 10 24    02 06 57.3 +04 23 20  29.5722 30.5576   172.0     0.3    19.8
2014 10 25    02 06 51.2 +04 22 49  29.5723 30.5576   172.0     0.3    19.8
2014 10 26    02 06 45.1 +04 22 17  29.5728 30.5576   172.0     0.3    19.8
2014 10 27    02 06 38.9 +04 21 46  29.5736 30.5576   171.7     0.3    19.8
2014 10 28    02 06 32.8 +04 21 16  29.5747 30.5576   171.4     0.3    19.8
2014 10 29    02 06 26.7 +04 20 45  29.5760 30.5576   171.0     0.3    19.9
2014 10 30    02 06 20.6 +04 20 15  29.5777 30.5575   170.4     0.3    19.9
2014 10 31    02 06 14.5 +04 19 46  29.5797 30.5575   169.8     0.3    19.9
2014 11 01    02 06 08.4 +04 19 16  29.5820 30.5575   169.2     0.3    19.9
2014 11 02    02 06 02.3 +04 18 47  29.5846 30.5575   168.4     0.4    19.9
2014 11 03    02 05 56.2 +04 18 19  29.5874 30.5575   167.7     0.4    19.9
2014 11 04    02 05 50.2 +04 17 51  29.5906 30.5574   166.9     0.4    19.9
2014 11 05    02 05 44.1 +04 17 23  29.5941 30.5574   166.1     0.4    19.9
2014 11 06    02 05 38.1 +04 16 55  29.5979 30.5574   165.2     0.5    19.9
2014 11 07    02 05 32.1 +04 16 29  29.6020 30.5574   164.3     0.5    19.9
2014 11 08    02 05 26.2 +04 16 02  29.6063 30.5574   163.4     0.5    19.9
2014 11 09    02 05 20.2 +04 15 36  29.6110 30.5573   162.5     0.6    19.9
2014 11 10    02 05 14.3 +04 15 10  29.6159 30.5573   161.6     0.6    19.9


__________________


L

Posts: 131433
Date:
RE: Asteroid (47171) 1999 TC36
Permalink  
 


Hubble unveils triplet mini-world in comet belt

Hubble space telescope images confirm an iceball asteroid in the comet belt is actually a triple system of objects.
Read more

__________________


L

Posts: 131433
Date:
TNO (47171) 1999 TC36
Permalink  
 


(47171) 1999 TC36  is a trans-Neptunian object (TNO). It was discovered in 1999 by Eric P. Rubenstein and Louis-Gregory Strolger during an observing run at Kitt Peak National Observatory  (KPNO). Dr. Rubenstein was searching images taken by Dr. Strolger as part of the Low-Z Supernova Search program. It is classified as a plutino with a 2:3 mean motion resonance with Neptune,  and currently only being 30.7 AU from the Sun,  is among the brighter trans-Neptunian objects.
Read more

1999TC36.gif

In 2009, analysis of Hubble images confirmed that 1999 TC36 is a triple system. The primary is composed of two similar-sized components.  The central pair have a semi-major axis of ~867 km with a period of ~1.9 days.

__________________


L

Posts: 131433
Date:
Asteroid (47171) 1999 TC36
Permalink  
 


Title: Asteroid (47171) 1999 TC36, A Transneptunian Triple
Authors: S. D. Benecchi, K. S. Noll, W. M. Grundy, H. F. Levison

We present new analysis of HST images of (47171) 1999 TC36 that confirm it as a triple system. Fits to the point-spread function consistently show that the apparent primary is itself composed of two similar-sized components. The two central components, A1 and A2, can be consistently identified in each of nine epochs spread over seven years of time. In each instance the component separation, ranging from 0.023±0.002 to 0.031±0.003 arcsec, is roughly one half of the Hubble Space Telescope's diffraction limit at 606 nm. The orbit of the central pair has a semi-major axis of a~867 km with a period of P~1.9 days. These orbital parameters yield a system mass that is consistent with Msys = 12.75±0.06 10^18 kg derived from the orbit of the more distant secondary, component B. The diameters of the three components are dA1= 286(+45,-38) km, dA2= 265(+41,-35 km and dB= 139(+22,-18) km. The relative sizes of these components are more similar than in any other known multiple in the solar system. Taken together, the diameters and system mass yield a bulk density of p=542(+317,-211) kg m^-3. HST Photometry shows that component B is variable with an amplitude of >=0.17±0.05 magnitudes. Components A1 and A2 do not show variability larger than 0.08±0.03 magnitudes approximately consistent with the orientation of the mutual orbit plane and tidally-distorted equilibrium shapes. The system has high specific angular momentum of J/J'=0.93, comparable to most of the known Transneptunian binaries.

Read more (4745kb, PDF)

__________________
Page 1 of 1  sorted by
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard