Coord 2000 | 03195-2145 | Discov num | JC 1 | Comp | AC | Coord arcsec 2000 | 03 19 30.97 -21 45 28.3 | ||||
Date first | 1877 | Date last | 2013 | Obs | 14 | ||||||
Pa first | 99 | Pa last | 122.9 | P.A. Now (θ) | 122.9° | ||||||
Sep first | 40.0 | Sep last | 38.203 | Sep. Now (ρ) | 38.203" | ||||||
Mag pri | 3.91 | Mag sec | 11.30 | delta mag (ΔM) | 7.39 | Spectral class | M3III (red) | ||||
Pri motion ra | +052 | Sec motion ra | +008 | ||||||||
Pri motion dec | +033 | Sec motion dec | -071 | ||||||||
Notes | N L U (See Notes, Linear solution, Proper motion indicates non-physical) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | Tau4 Eri | 168460 | 03 19 31 -21 45 28 | JC 1 AB | 2016 | 18 | 290 | 5.8 | 3.91 | 9.50 | 5.59 | ||
Show | 168460 | 03 19 31 -21 45 28 | JC 1 AC | 2013 | 14 | 123 | 38.2 | 3.91 | 11.30 | 7.39 | <=== | ||
Show | 168460 | 03 19 31 -21 45 28 | JC 1 AD | 1999 | 2 | 292 | 126.9 | 3.91 | 12.48 | 8.57 | |||
Show | 168460 | 03 19 31 -21 45 28 | JC 1 AE | 1999 | 3 | 273 | 128.1 | 3.91 | 12.58 | 8.67 | |||
Show | 168460 | 03 19 31 -21 45 28 | JC 1 AF | 2015 | 8 | 236 | 163.1 | 3.91 | 12.33 | 8.42 | |||
Show | 03 19 23 -21 44 40 | JC 1 Da,Db | 2016 | 3 | 18 | 2.9 | 13.10 | 13.10 | 0.00 |
Constellation | Eridanus | SAO | 168460 | HIP | 15474 | Tycho2 | 5878-01292-1 | ||||
Gaia DR2 | 5099455184967337600 | HD | 20720 | HR | 1003 | GC | 3979 | ||||
ADS | 2472 | BD | BD-22 584 | CD | CD-22 1154 | Bayer | Tau 4 Eridani | ||||
Bayer name | Tau4 Eri | Flamsteed | 16 Eridani | Flamsteed name | 16 Eri | Distance | 93.37 | ||||
Distance ly | 304.57 | Bayer greek | τ4 Eri |
discov_num | notes | refcode |
JC 1 | tau 4 Eri = 16 Eri. A is an irregular variable. | |
AC: Optical pair, based on study of relative motion of the components | ||
using the method of apparent motion parameters. | Kiy2008 | |
AC: Rectilinear solution by Hurowitz et al. (2013). | USN2013a |
refcode | metd | author | reference |
Kiy2008 | - | Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. | 2008SvAL...32..405K |
Kiy2008 | SvAL 34, 405, 2008 | ||
USN2013a | lin - | Hurowitz, J.L., Hartkopf, W.I., & Mason, B.D. | 2013IAUDS.181....1H |
USN2013a | Inf. Circ. 181, 1, 2013 |
idgroup | discov | author |
1 | JC | Jacob, W.S. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
03195-2145 | JC 1 | AC | 1964 | 10 | 114 | 39.3 | 3.91 | 10.80 | M3III | N | 031930.97-214528.3 |
03195-2145 | JC 1 | AC | 1999 | 11 | 120 | 39.9 | 3.91 | 10.80 | M3III | N | 031930.97-214528.3 |
03195-2145 | JC 1 | AC | 2013 | 13 | 121 | 39.2 | 3.91 | 11.30 | M3III | NL | 031930.97-214528.3 |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
A | B | C | D | Db | E | |
B | pa=291.4° sep=5.44" | |||||
C | pa=124.9° sep=36.31" | pa=123.1° sep=41.61" | ||||
D | pa=292.3° sep=127.08" | pa=292.3° sep=121.64" | pa=295.1° sep=162.71" | |||
Db | pa=293.6° sep=127.41" | pa=293.7° sep=121.98" | pa=296.1° sep=163.17" | pa=16.4° sep=2.89" | ||
E | pa=272.8° sep=119.03" | pa=271.9° sep=113.88" | pa=280.1° sep=151.03" | pa=181.8° sep=42.41" | pa=182.7° sep=45.21" | |
F | pa=233.9° sep=155.25" | pa=232.2° sep=152.39" | pa=245.5° sep=170.58" | pa=183.2° sep=139.88" | pa=183.5° sep=142.69" | pa=183.9° sep=97.49" |
Name | Tau4 Eri | Coord arcsec 2000 | 031930.97-214528.3 | Mag | 3.91 | Spectral class | M3III (red) | ||||
PmRA | 51.00 | PmDE | 32.0 | SAO | 168460 | HIP | 15474 | ||||
Tycho2 | 5878-01292-1 | HD | 20720 | HR | 1003 | GC | 3979 | ||||
ADS | 2472 | BD | BD-22 584 | CD | CD-22 1154 | Bayer | Tau 4 Eridani | ||||
Bayer name | Tau4 | Flamsteed | 16 Eridani | Flamsteed name | 16 Eri |
Tycho2 | 5878-01292-1 | Pflag | RAmdeg | 49.87917285 | DEmdeg | -21.75786579 | |||||
PmRA | 50.6 | PmDE | 31.6 | E RAmdeg | 3 | E DEmdeg | 3 | ||||
E pmRA | 0.8 | E pmDE | 0.8 | EpRAm | 1991.35 | EpDEm | 1991.49 | ||||
Num | 16 | Q RAmdeg | 1.3 | Q DEmdeg | 1.0 | Q pmRA | 1.1 | ||||
Q pmDE | 1.0 | BTmag | 5.787 | E BTmag | 0.014 | VTmag | 3.910 | ||||
E VTmag | 0.009 | Prox | 999 | TYC | T | HIP | 15474 | ||||
CCDM | RAdeg | 49.87904556 | DEdeg | -21.75793861 | EpRA 1990 | 1.58 | |||||
EpDE 1990 | 1.72 | E RAdeg | 3.2 | E DEdeg | 3.3 | Posflg | |||||
Corr | -0.1 |
SAO | 168460 | DelFlag | RA1950 | PmRA1950 | 0.0034 | ||||||
DE1950 | PmDE1950 | 0.036 | Vmag | 4 | SpType | Mb | |||||
Double code | Source | 70 | CatNum | 3979 | DM | BD-22 584 | |||||
DMcomp | BDsup | HD | 20720 | M HD | 0 | ||||||
GC | 3979 | RA1950rad | 0.86084519 | DE1950rad | -0.38290401 | PmRA2000 | 0.0037 | ||||
PmDE2000 | 0.033 |
Catalog | H | HIP | 15474 | Proxy | RAhms | 03 19 30.97 | |||||
DEdms | -21 45 28.6 | Vmag | 3.7 | VarFlag | 2 | R Vmag | H | ||||
RAdeg | 49.879 | DEdeg | -21.7579 | AstroRef | * | Plx | 12.63 | ||||
CCDM | 03195-2146 | N CCDM | I | Nsys | 1 | Ncomp | 1 | ||||
MultFlag | V | Source | Qual | M HIP | |||||||
Theta | Rho | HD | 20720 | BD | BD-22 584 | ||||||
CD | CD-22 1154 | CP | Dm number | -22 584 | VIred | 2.42 | |||||
SpType | M3/M4III | R SpType | Coord arcsec 2000 | 031930.97-214528.6 |
HIP | 15474 | Sn | 5 | So | 5 | Nc | 1 | ||||
RArad | 0.8705534791 | DErad | -0.3797477351 | Plx | 10.71 | PmRA | 51.89 | ||||
PmDE | 32.92 | E RArad | 0.33 | E DErad | 0.35 | E Plx | 0.54 | ||||
E pmRA | 0.46 | E pmDE | 0.56 | Hpmag | 3.7303 | E Hpmag | 0.0024 | ||||
SHp | 0.022 | VA | 2 | BV | 1.614 | E BV | 0.002 | ||||
VI | 2.42 |
Coord arcsec 2000 | 031930.61-214526.3 | Mag | 9.5 | Calc delta mag | 5.59 | Calc coord | yes |
Coord arcsec 2000 | 031933.11-214549.1 | Mag | 11.3 | PmRA | 8.00 | PmDE | -71.0 | ||||
Calc delta mag | 7.39 | Calc coord | yes |
Coord arcsec 2000 | 031922.53-214440.1 | Coord calc | 031923.12-214441.2 | Mag | 13.1 | Mag composta | 12.48 | ||||
PmRA | 4.00 | PmDE | 15.0 | Calc delta mag | 9.19 |
Coord arcsec 2000 | 031922.59-214437.3 | Mag | 13.1 | Calc delta mag | 9.19 | Calc coord | yes |
Coord arcsec 2000 | 031922.44-214522.5 | Mag | 12.58 | PmRA | 62.00 | PmDE | -26.0 | ||||
Calc delta mag | 8.67 | Calc coord | yes |
Coord arcsec 2000 | 031921.96-214659.8 | Mag | 12.33 | PmRA | 43.00 | PmDE | 7.0 | ||||
Tycho2 | 5878-00345-1 | Calc delta mag | 8.42 | Calc coord | yes |
Tycho2 | 5878-00345-1 | Pflag | RAmdeg | 49.83866304 | DEmdeg | -21.78314948 | |||||
PmRA | 38.2 | PmDE | 12.7 | E RAmdeg | 116 | E DEmdeg | 137 | ||||
E pmRA | 3.8 | E pmDE | 4.1 | EpRAm | 1973.42 | EpDEm | 1968.28 | ||||
Num | 3 | Q RAmdeg | 1.2 | Q DEmdeg | 1.0 | Q pmRA | 1.2 | ||||
Q pmDE | 1.0 | BTmag | 12.353 | E BTmag | 0.165 | VTmag | 12.331 | ||||
E VTmag | 0.196 | Prox | 999 | TYC | HIP | ||||||
CCDM | RAdeg | 49.83856833 | DEdeg | -21.78317861 | EpRA 1990 | 1.69 | |||||
EpDE 1990 | 1.69 | E RAdeg | 135.3 | E DEdeg | 168.4 | Posflg | |||||
Corr | 0.1 |