2022A&A...664A.130S


Query : 2022A&A...664A.130S

2022A&A...664A.130S - Astronomy and Astrophysics, volume 664A, 130-130 (2022/8-1)

Physical properties of the trans-Neptunian object (38628) Huya from a multi-chord stellar occultation.

SANTOS-SANZ P., ORTIZ J.L., SICARDY B., POPESCU M., BENEDETTI-ROSSI G., MORALES N., VARA-LUBIANO M., CAMARGO J.I.B., PEREIRA C.L., ROMMEL F.L., ASSAFIN M., DESMARS J., BRAGA-RIBAS F., DUFFARD R., MARQUES OLIVEIRA J., VIEIRA-MARTINS R., FERNANDEZ-VALENZUELA E., MORGADO B.E., ACAR M., ANGHEL S., ATALAY E., ATES A., BAKIS H., BAKIS V., EKER Z., ERECE O., KASPI S., KAYHAN C., KILIC S.E., KILIC Y., MANULIS I., NEDELCU D.A., NIAEI M.S., NIR G., OFEK E., OZISIK T., PETRESCU E., SATIR O., SOLMAZ A., SONKA A., TEKES M., UNSALAN O., YESILYAPRAK C., ANGHEL R., BERTESTEANU D., CURELARU L., DANESCU C., DUMITRESCU V., GHERASE R., HUDIN L., STOIAN A.-M., TERCU J.O., TRUTA R., TURCU V., VANTDEVARA C., BELSKAYA I., DEMENTIEV T.O., GAZEAS K., KARAMPOTSIOU S., KASHUBA V., KISS C., KOSHKIN N., KOZHUKHOV O.M., KRUGLY Y., LECACHEUX J., PAL A., PUSKULLU C., SZAKATS R., ZHUKOV V., BAMBERGER D., MONDON B., PERELLO C., PRATT A., SCHNABEL C., SELVA A., TENG J.P., TIGANI K., TSAMIS V., WEBER C., WELLS G., KALKAN S., KUDAK V., MARCINIAK A., OGLOZA W., OZDEMIR T., PAKSTIENE E., PERIG V. and ZEJMO M.

Abstract (from CDS):


Context. As part of our international program aimed at obtaining accurate physical properties of trans-Neptunian objects (TNOs), we predicted a stellar occultation by the TNO (38628) Huya of the star Gaia DR2 4352760586390566400 (mG = 11.5 mag) on March 18, 2019. After an extensive observational campaign geared at obtaining the astrometric data, we updated the prediction and found it favorable to central Europe. Therefore, we mobilized half a hundred of professional and amateur astronomers in this region and the occultation was finally detected by 21 telescopes located at 18 sites in Europe and Asia. This places the Huya event among the best ever observed stellar occultation by a TNO in terms of the number of chords.
Aims. The aim of our work is to determine an accurate size, shape, and geometric albedo for the TNO (38628) Huya by using the observations obtained from a multi-chord stellar occultation. We also aim to provide constraints on the density and other internal properties of this TNO.
Methods. The 21 positive detections of the occultation by Huya allowed us to obtain well-separated chords which permitted us to fit an ellipse for the limb of the body at the moment of the occultation (i.e., the instantaneous limb) with kilometric accuracy.
Results. The projected semi-major and minor axes of the best ellipse fit obtained using the occultation data are (a', b') = (217.6 ± 3.5 km, 194.1 ± 6.1 km) with a position angle for the minor axis of P' = 55.2° ± 9.1. From this fit, the projected area-equivalent diameter is 411.0 ± 7.3 km. This diameter is compatible with the equivalent diameter for Huya obtained from radiometric techniques (D = 406 ± 16 km). From this instantaneous limb, we obtained the geometric albedo for Huya (pV = 0.079 ± 0.004) and we explored possible three-dimensional shapes and constraints to the mass density for this TNO. We did not detect the satellite of Huya through this occultation, but the presence of rings or debris around Huya was constrained using the occultation data. We also derived an upper limit for a putative Pluto-like global atmosphere of about psurf = 10 nbar.

Abstract Copyright: © P. Santos-Sanz et al. 2022

Journal keyword(s): Kuiper belt objects: individual: Huya - methods: observational - techniques: photometric

Simbad objects: 1

goto Full paper

goto View the references in ADS

Number of rows : 1
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 TYC 5061-513-1 * 16 41 06.4315989264 -06 43 34.305449088   12.32 11.74     ~ 1 0

Query : 2022A&A...664A.130S

Basic data :
TYC 5061-513-1 -- Star
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
* (TYC,Gaia), IR (2MASS)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
16 41 06.4315989264 -06 43 34.305449088 (Optical) [ 0.0338 0.0186 90 ] A 2020yCat.1350....0G
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
16 38 25.3185794000 -06 37 49.838008680 [ 0.0338 0.0186 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
010.3452639821929 +24.9967680831363 [ 0.0338 0.0186 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr :
-4.294 -14.003 [0.045 0.034 90] A 2020yCat.1350....0G
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas):
1.6988 [0.0411] A 2020yCat.1350....0G
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (6) :
B 12.32 [0.23] D 2000A&A...355L..27H
V 11.74 [0.18] D 2000A&A...355L..27H
G 11.535178 [0.002772] C 2020yCat.1350....0G
J 10.541 [0.026] C 2003yCat.2246....0C
H 10.384 [0.024] C 2003yCat.2246....0C
K 10.294 [0.023] C 2003yCat.2246....0C
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)

Send to sendBySAMP sendBySAMP

sedIcon
within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).
sed-help-icon

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (5) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

TYC 5061-513-1 TIC 153200603 Gaia DR3 4352760586390566400
2MASS J16410644-0643343 Gaia DR2 4352760586390566400

References (1 between 1850 and 2023) (Total 1)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)


Collections of Measurements


distance : 2    PLX : 2    PM : 2   

   


External archives :

Link by name to the catalogue in VizieR :

TYC 5061-513-1 2MASS J16410644-0643343 Gaia DR2 4352760586390566400 Gaia DR3 4352760586390566400

Search by coordinates in Vizier (radius: 5 arcsec)


Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

Currently no annotations available

add an annotation to this object

report an error concerning the data of this object


To bookmark this query, right click on this link: simbad:objects in 2022A&A...664A.130S and select 'bookmark this link' or equivalent in the popup menu


2022.11.27-09:17:41

© Université de Strasbourg/CNRS

    • Contact