21442+0953 S 798 AC (Enif)

21^h 44^m 11.14^s +09° 52' 30.0" P.A. 318.00 sep 143.9 mag 2.53,8.74 Sp K2Ib+F8 dist. 211.42 pc (689.65 l.y.)

Coord 2000	21442+0953	Discov num	S 798	Comp	AC	Coord arcsec 2000	21 44 11.14 +09 52 30.0
Date first	1825	Date last	2018	Obs	29
Pa first	323	Pa last	317.7	P.A. Now (θ)	317.7°
Sep first	138.5	Sep last	143.91	Sep. Now (ρ)	143.91"
Mag pri	2.53	Mag sec	8.74	delta mag (ΔM)	6.21	Spectral class	K2Ib+F8 (yellow-orange/yellow-white)
Pri motion ra	+027	Sec motion ra	-035
Pri motion dec	+000	Sec motion dec	-017
Notes	N S (See Notes, Parallax indidates non-physical)

rPM=1.652

This double is not physical.

21442+0953 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		127029	21 44 11 +09 52 30	S 798 AB	2013	13	323	83.2	2.53	12.80	10.27
Show	Enif	127029	21 44 11 +09 52 30	S 798 AC	2018	29	318	143.9	2.53	8.74	6.21		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Common name	Enif	Constellation	Pegasus	SAO	127029	HIP	107315
Tycho2	1125-02186-1	Gaia DR2	1765433632573306496	HD	206778	HR	8308
GC	30431	ADS	15268	BD	BD+09 4891	Bayer	Epsilon Pegasi
Bayer name	Eps Peg	Flamsteed	8 Pegasi	Flamsteed name	8 Peg	FK5	815
Distance	211.42	Distance ly	689.65	Bayer greek	ε Peg

Other names

Enf, ENIR, AL ANF, OS PEGASI, FOM

Meaning

muzzle, nose

WDS 21442+0953 S 798 AC (Enif) : NOTES

discov_num	notes	refcode
S 798	eps Peg = 8 Peg = Enif. STTA223 = H 6 103.
	The primary is variable.

REFERENCES

refcode	metd	author	reference
S__1826	Ma -	South, J.	1826RSPT..116....1S
S__1826		Phil. Trans. R. Soc., 116, Pt.1, 1826
S__1844A	Ma -	South, J.	1844QB43.S66.......
S__1844A		cited by Smyth (Cycle of Celestial Objects 2, 1844)
S__1852A	Ma -	South, J.	.
S__1852A		cited by Bishop (Bishop Obs. Astron. Observations 1852)
S__1880A	Ma -	South, J.	1880MNRAS..40..497B
S__1880A		cited by Burnham (MNRAS 40, 497, 1880)
S__1906A	Ma -	South, J.	1906MmRAS..56....1L
S__1906A		cited by Lewis (MemRAS 56, 1, 1906)
S__1906B	Ma -	South, J.	1906QB821.B972.....
S__1906B		cited in BDS (Burnham Double Star Cat., 1906)
S__1913A	Ma -	South, J.	1913QB811.B8.......
S__1913A		cited by Burnham (Carnegie Inst. Wash. #168, 1913)
S__1922A	Ma -	South, J.	1922AN....216...49R
S__1922A		cited by Rabe (AN 216, 49, 1922)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21442+0953	S 798	AC	2006	23	321	144.2	2.53	8.74		N D	214411.14+095230.0
21442+0953	S 798	AC	2010	24	317	143.9	2.53	8.74		N D	214411.14+095230.0
21442+0953	S 798	AC	2011	26	314	147.0	2.53	8.74		N D	214411.14+095230.0
21442+0953	S 798	AC	2013	27	318	145.4	2.53	8.74	K2Ib	N D	214411.14+095230.0
21442+0953	S 798	AC	2016	28	318	144.6	2.53	8.74	K2Ib	N	214411.14+095230.0
21442+0953	S 798	AC	2018	29	318	143.9	2.53	8.74	K2Ib	N	214411.14+095230.0

If you need more information about this double, apply for a data request form to the WDS.

WDS 21442+0953 S 798 AC (Enif) : VISUAL OBSERVATIONS REPORTS

Show	date	username	difficulty	separation	pa_estim	interest	notes
Show	23/09/24	Diego Vercelli	easy	separated	320	interesting
Show	13/11/05	gianluca.paone	easy	separated	327	interesting but to observe in better conditions

WDS 21442+0953 S 798 AC (Enif) : MEASURES

No records found.

WDS 21442+0953 (Enif) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 21442+0953 (Enif) : ALADIN DSS IMAGE @ 21^h 44^m 11.14^s +09° 52' 30.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21442+0953 S 798 AC (Enif) : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show	Enif	21442+0953	S 798	AB	323	83.2
Show	Enif	21442+0953	S 798	AC	318	143.9
Show		21448+1009	GRV 498		59	37.3	21
Show		21451+0925	GWP3091		119	16.9	31
Show		21473+0956	UC 4563		269	30.4	47
Show		21411+0939	GWP3087		262	68.7	48
Show		21449+1040	HJ 285		55	8.0	49
Show		21468+1030	J 201		224	2.7	53
Show		21431+1045	ITF 72		75	33.7	55
Show		21424+0902	UC 4534		216	40.4	57
Show		21460+1053	BU 1305	AD	47	49.2	66
Show		21460+1053	BU 1305	AE	66	81.8	66
Show		21460+1053	BU 1305	AF	235	42.8	66
Show		21460+1053	BU 1305	AG	297	98.7	66
Show		21460+1053	BU 1305	A,BC	90	89.2	66
Show		21460+1053	BU 1305	BC	52	1.3	67
Show		21400+0911	CHR 105	AB	256	0.1	75
Show		21403+0848	HJ 3047		37	18.2	87
Show		21496+0920	HJ 3060		232	18.3	87
Show		21500+0941	GWP3100		222	67.6	88
Show		21423+1116	SLW1250		10	30.0	89
Show		21502+0922	RAO 624		331	1.5	95
Show		21410+1116	UC 265		283	17.2	96
Show		21476+1116	BPM2407		143	39.7	98
Show		21439+0812	UC 4540		92	48.4	101
Show		21511+1022	COU2549	AB	86	0.1	107
Show		21511+1022	HEI 599	AC	82	0.2	107
Show		21479+1136	BPM2408		52	87.5	118
Show		21454+1149	WAA9005		184	1.3	119
Show		21504+0839	HJ 944		17	20.4	120
Show		21523+0958	CHE 324		191	14.2	121
Show		21514+1052	LDS4917		93	41.2	122
Show		21459+1153	A 1223	AB	331	0.1	123
Show		21459+1153	A 1223	AB,C	40	13.5	123
Show		21524+0938	RED 18		118	0.3	123
Show		21418+1151	BPM2402			17.8	124
Show		21523+1024	TDT3207		315	1.7	124
Show		21519+0905	STF2833		337	8.4	125
Show		21480+1146	A 1224		353	3.1	127
Show		21397+1142	TDT3091		243	1.5	128
Show		21526+0925	HJ 948		300	15.1	129
Show		21383+1128	UC 4517		219	50.4	129
Show		21532+0948	LDS4918		348	9.9	134
Show		21535+0942	UC 266		222	122.1	138
Show		21513+0821	STF2831		355	14.5	140
Show		21537+0954	GWP3103		230	32.3	141
Show		21359+1105	CVR 910		120	9.4	142
Show		21347+0934	GMC 22		65	25.0	142
Show		21345+0958	BRT3229		158	3.4	144
Show		21345+0930	STF3112	AB	241	6.7	146
Show		21345+0930	FYM 191	AC	200	25.7	146

WDS 21442+0953 : COMPONENTS

	A	B
B	pa=322.9° sep=82.77"
C	pa=318.1° sep=142.95"	pa=311.6° sep=60.85"

21442+0953 A

Common name	Enif	Meaning	muzzle, nose	Other names	Enf, ENIR, AL ANF, OS PEGASI, FOM	Coord arcsec 2000	214411.14+095230.0
Mag	2.53	Spectral class	K2II (yellow-orange)	PmRA	27.00	PmDE	0.0
SAO	127029	HIP	107315	Tycho2	1125-02186-1	HD	206778
HR	8308	GC	30431	BD	BD+09 4891	Bayer	Epsilon Pegasi
Bayer name	Eps Peg	Flamsteed	8 Pegasi	Flamsteed name	8 Peg	FK5	815

Tycho2

Tycho2	1125-02186-1	Pflag	X	RAmdeg		DEmdeg
PmRA		PmDE		E RAmdeg		E DEmdeg
E pmRA		E pmDE		EpRAm		EpDEm
Num		Q RAmdeg		Q DEmdeg		Q pmRA
Q pmDE		BTmag	4.391	E BTmag	0.014	VTmag	2.533
E VTmag	0.009	Prox	999	TYC	T	HIP	107315
CCDM		RAdeg	326.04642194	DEdeg	9.87500917	EpRA 1990	1.76
EpDE 1990	1.60	E RAdeg	3.3	E DEdeg	3.5	Posflg
Corr	-0.3

SAO

SAO	127029	DelFlag		RA1950		PmRA1950	0.002
DE1950		PmDE1950	0.005	Vmag	2.5	SpType	K0
Double code		Source	74	CatNum	815	DM	BD+09 4891
DMcomp		BDsup		HD	206778	M HD	0
GC	30431	RA1950rad	5.6798654	DE1950rad	0.1683355	PmRA2000	0.0021
PmDE2000	0

Hipparcos

Catalog	H	HIP	107315	Proxy		RAhms	21 44 11.14
DEdms	+09 52 30.0	Vmag	2.38	VarFlag	1	R Vmag	G
RAdeg	326.046	DEdeg	9.87501	AstroRef		Plx	4.85
CCDM	21441+0953	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual	S	M HIP
Theta		Rho		HD	206778	BD	BD+09 4891
CD		CP		Dm number	+09 4891	VIred	1.42
SpType	K2Ibvar	R SpType		Coord arcsec 2000	214411.14+095230.0

Hipparcos 2

HIP	107315	Sn	5	So	0	Nc	1
RArad	5.6905834997	DErad	0.172351396	Plx	4.73	PmRA	26.92
PmDE	0.44	E RArad	0.15	E DErad	0.11	E Plx	0.17
E pmRA	0.18	E pmDE	0.12	Hpmag	2.546	E Hpmag	0.0012
SHp	0.015	VA	2	BV	1.52	E BV	0.51
VI	1.42

21442+0953 B

Coord arcsec 2000	214407.76+095336.0		Mag	12.8		PmRA	2.00		PmDE	-13.0
Calc delta mag	10.27		Calc coord	yes

21442+0953 C

Coord arcsec 2000	214404.68+095416.4		Mag	8.74		Spectral class	F8 (yellow-white)		PmRA	-35.00
PmDE	-17.0		Tycho2	1125-01747-1		Calc delta mag	6.21		Calc coord	yes

Tycho2

Tycho2	1125-01747-1	Pflag		RAmdeg	326.01937498	DEmdeg	9.90481274
PmRA	-32.1	PmDE	-20.4	E RAmdeg	22	E DEmdeg	26
E pmRA	1.8	E pmDE	1.8	EpRAm	1986.91	EpDEm	1984.42
Num	9	Q RAmdeg	1.2	Q DEmdeg	0.8	Q pmRA	1.2
Q pmDE	0.8	BTmag	9.351	E BTmag	0.023	VTmag	8.739
E VTmag	0.017	Prox	999	TYC	T	HIP
CCDM		RAdeg	326.01944500	DEdeg	9.90486333	EpRA 1990	1.79
EpDE 1990	1.71	E RAdeg	26.2	E DEdeg	34.2	Posflg
Corr	-0.2