12490+6607 DEL 4 (DP Dra)

12^h 49^m 02.75^s +66° 06' 36.7" P.A. 221.00 sep 0.3 mag 6.80,6.80 Sp M3 dist. 10.21 pc (33.31 l.y.)

Coord 2000	12490+6607	Discov num	DEL 4	Comp		Coord arcsec 2000	12 49 02.75 +66 06 36.7
Date first	1997	Date last	2019	Obs	10
Pa first	240	Pa last	221.4	P.A. Now (θ)	20.1°
Sep first	0.2	Sep last	0.269	Sep. Now (ρ)	0.273"
Mag pri	6.80	Mag sec	6.80	delta mag (ΔM)	0	Spectral class	M3 (red)
Pri motion ra	-438	Sec motion ra
Pri motion dec	-101	Sec motion dec
Notes	O K (Orbital solution, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Var name	DP Dra		Constellation	Draco		HIP	62556		GL	Gl 487
Distance	10.21		Distance ly	33.31

ORBITAL ELEMENTS

Period (P)	7.307817y	Periastron (T)	2009.262199y	Semi-major axis (a)	0.33498a
Eccentricity (e)	0.426987	Inclination (i)	76.1171°	Longitude of periastron (ω)	83.3857°
Node (Ω)	21.9262°	Notes		Reference	Kpp2020f
Equinox		Last observation		Grade	3	(1=Definitive, 9=Indet.)

label	theta	rho
2000	3.1	0.244
2001	18.9	0.280
2002	110.1	0.046
2003	203.0	0.297
2004	215.1	0.301
2005	235.2	0.192
2006	300.2	0.115
2007	355.9	0.210
2008	14.4	0.289
2009	37.4	0.138
2010	198.1	0.248
2011	211.3	0.318
2012	226.9	0.231
2013	272.7	0.121
2014	345.8	0.173
2015	9.8	0.277
2016	26.0	0.226
2017	189.2	0.163
2018	207.7	0.321
2019	220.9	0.266
2020	251.6	0.147
2021	330.3	0.139
2022	4.6	0.252
2023	20.1	0.273
2024	147.7	0.057
2025	204.0	0.305
2026	216.2	0.295
2027	237.8	0.183
2028	307.1	0.117
2029	357.9	0.219
2030	15.5	0.289

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

Measures: green=micrometric, blue=interferometric, purple=photographic

WDS 12490+6607 DEL 4 (DP Dra) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Kpp2020f	Hg+ j	Knapp, W.R.A.	2020JDSO...16..229K
Kpp2020f	+C	JDSO 16, 229, 2020
Kpp2020f	+orb

DISCOVERER

idgroup	discov	author
1	DEL	Delfosse, X., Forveille, T., Beuzit, J.-L., Udry, S., Mayor, M., & Perrier, C.
4	DEL	Delfosse, X., Forveille, T., Segransan, D., Beuzit, J.-L.; Udry, S., Perrier, C.,
4	DEL	& Mayor, M.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
12490+6607	DEL 4		1997	0		0.2	10.92		M3		124902.75+660636.7
12490+6607	DEL 4		2008	1	201	0.3	10.92		M3		124902.75+660636.7
12490+6607	DEL 4		2019	8	221	0.3	10.92		M3		124902.75+660636.7

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

WDS 12490+6607 DEL 4 (DP Dra) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 12490+6607 DEL 4 (DP Dra) : MEASURES

No records found.

WDS 12490+6607 (DP Dra) : VIRTUAL EYEPIECE

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Pass over with the mouse cursor to display the catalog designation.

WDS 12490+6607 (DP Dra) : ALADIN DSS IMAGE @ 12^h 49^m 02.75^s +66° 06' 36.7"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 12490+6607 DEL 4 (DP Dra) : NEIGHBORHOODS

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Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		12490+6607	DEL 4		221	0.3
Show		12416+6546	LDS2657		54	9.9	50
Show		12390+6553	GRV1080		121	19.3	61
Show		12576+6532	LDS2661		51	7.2	63
Show		12382+6628	LDS2656		257	69.3	69
Show		12376+6623	MLR 152		309	0.2	72
Show		12358+6550	LDS2652		23	3.2	82
Show		12342+6627	LDS2651		5	158.3	92
Show		12451+6438	HDS1786	AB	240	0.4	93
Show		12451+6438	GII 193	Aa,Ab	104	0.2	93
Show		12396+6440	STF1667	AB	40	1.2	105
Show		12396+6440	STF1667	AC	262	46.4	105
Show		12360+6458	LDS2653		250	25.6	107
Show		13026+6725	CVR 677		158	10.5	113
Show		12313+6700	LDS2649		261	120.6	119
Show		12353+6740	CVR1451		133	3.2	124
Show		13018+6746	MLR 153	AB	236	1.6	125
Show		13018+6746	GII 194	Aa,Ab	112	0.2	125
Show		12523+6403	SLW 787		301	35.4	126
Show		12477+6357	LDS2659		188	8.3	129
Show		13033+6749	TDS8668		290	0.7	133
Show		12380+6804	LDS2655		48	50.4	135
Show		13050+6436	HU 1258		115	0.2	136
Show		13033+6759	CVR1483		24	4.9	140
Show		12330+6752	TDS8430		159	1.2	142
Show		13044+6800	LDS2664		333	12.5	146
Show		13068+6429	DAM 29		194	306.8	149
Show		12297+6743	LDS2645		174	3.6	149
Show		12411+6831	STF1671	AB	201	29.0	152
Show		12411+6831	STF1671	AC	153	38.4	152
Show		12307+6756	LDS2647		306	1.9	153
Show		12573+6839	KPP3261		132	1.0	160
Show		12314+6810	LDS2650		17	3.9	160
Show		13068+6813	TDS8694		49	0.7	163
Show		12458+6320	NSN 53		144	15.0	168
Show		12461+6320	LDS2658		144	15.0	168
Show		13018+6337	JNN 83	Ba,Bb	327	0.2	169
Show		12307+6404	MLB 465		156	2.0	171
Show		13018+6337	LDS2662	AB	307	119.8	171
Show		13018+6337	JNN 242	AC	92	5.0	171
Show		12317+6355	CBL 384		123	17.9	172
Show		13088+6838	SKF2713		96	10.7	190
Show		13089+6337	LDS2667		21	16.4	195
Show		12311+6320	LDS2648		321	1.9	203
Show		12445+6244	BVD 319		34	9.3	205
Show		12582+6242	TDS8616		2	0.5	214
Show		12297+6313	LDS2646		70	5.2	214
Show		13079+6259	KPP3886		58	5.7	224
Show		13051+6246	MLB 351		163	2.6	226
Show		12359+6939	FMR 107		206	8.3	226
Show		12554+6953	A 1092		169	0.3	230

WDS 12490+6607 : COMPONENTS

	A
B	pa=199.6° sep=0.21"

12490+6607 A

Componente originario normalizzato	AB		Name	DP Dra		Coord arcsec 2000	124902.75+660636.7		Mag	6.8
Spectral class	M3 (red)		PmRA	-438.00		PmDE	-101.0

12490+6607 B

Componente originario normalizzato

Coord arcsec 2000

124902.74+660636.5

Mag

6.8

Calc coord

yes