00155-1608 HEI 299
00h 15m 27.99s -16° 08' 01.8" P.A. 211.00 sep 0.3 mag 11.00,11.40 Sp M3.5V+M5V dist. 4.99 pc (16.28 l.y.)
| Coord 2000 |
00155-1608 |
|
Discov num |
HEI 299 |
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Comp |
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Coord arcsec 2000 |
00 15 27.99 -16 08 01.8 |
|
| Date first |
1985 |
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Date last |
2021 |
|
Obs |
57 |
|
| Pa first |
130 |
|
Pa last |
210.5 |
|
P.A. Now (θ) |
31.7° |
|
| Sep first |
0.2 |
|
Sep last |
0.333 |
|
Sep. Now (ρ) |
0.208" |
|
| Mag pri |
11.00 |
|
Mag sec |
11.40 |
|
delta mag (ΔM) |
0.4 |
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Spectral class |
M3.5V+M5V (red/red) |
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| Pri motion ra |
+732 |
|
Sec motion ra |
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| Pri motion dec |
-608 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cetus |
|
HIP |
1242 |
|
GL |
GJ 1005A |
|
Distance |
4.99 |
|
| Distance ly |
16.28 |
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ORBITAL ELEMENTS
| Period (P) | 4.55726y | ± 0.00075 |
Periastron (T) | 58172.9d (2018.148y) | ± 1.9 |
Semi-major axis (a) | 312.85m | ± 0.5 |
| Eccentricity (e) | 0.36136 | ± 0.00098 |
Inclination (i) | 143.93° | ± 0.25 |
Longitude of periastron (ω) | 345.26° | ± 0.62 |
| Node (Ω) | 61.23° | ± 0.41 |
Notes | n | |
Reference | MnA2019 | |
| Equinox | | |
Last observation | 2016 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
61.4 |
0.202 |
| 2001 |
306.9 |
0.286 |
| 2002 |
259.8 |
0.413 |
| 2003 |
225.5 |
0.381 |
| 2004 |
149.5 |
0.200 |
| 2005 |
1.7 |
0.216 |
| 2006 |
281.6 |
0.355 |
| 2007 |
245.2 |
0.422 |
| 2008 |
203.9 |
0.307 |
| 2009 |
78.3 |
0.196 |
| 2010 |
315.6 |
0.267 |
| 2011 |
263.8 |
0.405 |
| 2012 |
230.0 |
0.394 |
| 2013 |
164.9 |
0.217 |
| 2014 |
16.4 |
0.211 |
| 2015 |
287.1 |
0.339 |
| 2016 |
249.0 |
0.423 |
| 2017 |
210.4 |
0.330 |
| 2018 |
96.3 |
0.189 |
| 2019 |
325.6 |
0.250 |
| 2020 |
268.0 |
0.395 |
| 2021 |
234.1 |
0.405 |
| 2022 |
177.8 |
0.239 |
| 2023 |
31.7 |
0.208 |
| 2024 |
293.3 |
0.321 |
| 2025 |
252.7 |
0.421 |
| 2026 |
216.2 |
0.350 |
| 2027 |
115.3 |
0.187 |
| 2028 |
337.0 |
0.235 |
| 2029 |
272.4 |
0.383 |
| 2030 |
238.1 |
0.413 |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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