U Geminorum

Query : U Geminorum

Basic data :
V* U Gem -- Cataclysmic Binary
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:
X (1AXG,1E,...), * (HD,AP,...), SB* (SBC7,SBC9), Em* (2020A&A,EM*), V* (V*,AAVSO), Opt (LAMOST,SDSS), CV* (2020MNRAS), WD* (1993ApJ), HS* (1962ApJ), PM* (PM), blu (Ton), UV (TD1), NIR (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) :
07 55 05.2323858391 +22 00 05.045435077 (Optical) [ 0.0245 0.0153 90 ] A 2018yCat.1345....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
FK5 coord. (ep=J2000 eq=2000) :
07 55 05.2338693590 +22 00 05.023611825 [ 0.0245 0.0153 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
FK4 coord. (ep=B1950 eq=1950) :
07 52 07.7675001352 +22 08 03.711188840 [ 0.0245 0.0153 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) :
199.2231715888700 +23.3944951222226 [ 0.0245 0.0153 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 :
-27.406 -40.309 [0.034 0.022 90] A 2020yCat.1350....0G
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, ∼=unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz :
V(km/s) 273.921997 [1.65108] / z(spectroscopic) 0.000914 [0.000006] / cz 274.05 [1.65]
   (NIR) B 2020AJ....160..120J
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):
10.7121 [0.0299] A 2018yCat.1345....0G
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
DA D 1993ApJ...405..327L
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 (11) :
B 15.3 [~] E ~
V 14.54 [~] D 2014AJ....148..115S
G 13.903449 [0.011053] C 2020yCat.1350....0G
J 11.86 [~] C 2002yCat.2237....0D
H 11.23 [~] C 2002yCat.2237....0D
K 10.92 [~] C 2002yCat.2237....0D
u (AB) 10.715 [0.001] C 2009ApJS..182..543A
g (AB) 10.243 [0.001] C 2009ApJS..182..543A
r (AB) 10.409 [0.001] C 2009ApJS..182..543A
i (AB) 10.471 [0.001] C 2009ApJS..182..543A
z (AB) 10.996 [0.002] C 2009ApJS..182..543A
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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!).
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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (34) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 64511 GCRV 59196 1RXS J075505.1+220008 2XMM J075505.1+220004
AP J07550523+2200050 H 0751+22 SBC7 325 XSS J07550+2152
1AXG J075506+2200 H 0754+22 SBC9 483 [BM83] X0752+221
BD+22 1807 LAMOST J075505.20+220004.6 SDSS J075505.20+220004.9 [TSA98] J075506.05+220004.22
1E 0752.1+2208 LAMOST J075505.23+220005.0 TD1 11278 AAVSO 0749+22
2E 1889 2MASS J07550523+2200050 TIC 293254698 Gaia DR3 674214551557961984
2E 0752.1+2208 PLX 1870 Ton 842 Gaia DR2 674214551557961984
EM* CDS 707 PLX 1870.00 V* U Gem
EXSS 0752.1+2207 PM J07550+2200 WEB 7590

References (75 between 2019 and 2024) (Total 1104)
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 :

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                 or select by : (not exhaustive, explanation here)


Collections of Measurements


velocities : 4    V* : 4    distance : 3    PLX : 3    PM : 2    MK : 5   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

velocities (4)

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |  273.921997    1.65108|B (    )|s , ,NIR ,           |          |       |  |2020AJ....160..120J|
 

v* (4)

 |     vartyp     |    Vmax     p     Vmin    |   period   | epoch (JD)   |D/rt %|     reference     |
 -----------------------------------------------------------------------------------------------------
m|E               |                           |   0.176906 |              |      |2004AcA....54..207K|
 

distance (3)

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |   93.3524  pc  |  -0.2605     +0.2605  |paral   |2018yCat.1345....0G|
 

plx (3)

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
 |  10.7048  :   0.0338     |2020yCat.1350....0G|
 

pm (2)

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |  -27.406[    0.034]|  -40.309[    0.022]|ICRS|2020yCat.1350....0G|
 

mk (5)

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
 |  /   |M4/5                                |2005MNRAS.361.1091N|
 
Observing logs


herschel : 2    IUE : 8    XMM : 1   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

herschel (2)

The 1 column in color are computed by VizieR, and are not part of the original data.

Note: (see also the postcard server)

VI/139/herschel
Post annotation
Herschel Observation Log (Herschel Science Centre, 2013) [ReadMe+ftp]
2013yCat.6139....0H

The Herschel Observation Log (37093 rows)
img(gal)
start AladinLite

Full _r OD Target RAJ2000 DEJ2000 Proposal AOT Dur Start ObsId PACS HIFI SPIRE Label arcmin "h:m:s" "d:m:s" s s
1 0.0079 872 U Gem 07 55 05.20 +22 00 04.9 OT1_tharriso_1 PacsPhoto 1462 2011-10-02T16:43:57 1342230096 get Herschel/PACS observation #1342230096 UGem-0002 2 0.0079 872 U Gem 07 55 05.20 +22 00 04.9 OT1_tharriso_1 PacsPhoto 1462 2011-10-02T16:18:32 1342230095 get Herschel/PACS observation #1342230095 UGem-0001

iue (8)

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |HD 64511        :            |UGOES|54|L SWP 46374 S|      BO|921130 001000|009600| |302|G|C=78,B=40           |*|1996IUEML.C......0I|
 

xmm (1)

The 3 columns in color are computed by VizieR, and are not part of the original data.
B/xmm/xmmlog
Post annotation
XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2012) [ReadMe+ftp]
2002yCat....102009X

The XMM-Newton Observation log (2024-06-03)[image/fits] (17762 rows)
img(gal)
start AladinLite

Full _r Obsno PropDate Object RAJ2000 DEJ2000 Obs0 ObsDur Image PPSp FITS XSAlink arcmin s deg deg s s
1 0.0051 0110070401 2003-05-22 U Gem 118.77171 +22.00139 2002-04-13T05:13:28 23001 FITS PPSp 0110070401 Y


External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : U Geminorum

Link by name to the catalogue in VizieR :

HD 64511 AP J07550523+2200050 BD+22 1807 2E 1889 2MASS J07550523+2200050
PLX 1870 1RXS J075505.1+220008 SDSS J075505.20+220004.9 TD1 11278 V* U Gem
Gaia DR3 674214551557961984 Gaia DR2 674214551557961984

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Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

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