discov_num | notes | refcode |
STF 245 | ALI1193. | |
EGG 2 | Aa,Ab: This system has spectral type F2 from SIMBAD and parallax of | |
10.26 +/- 2.92 mas from van Leeuwen (2007). A previous orbit was | VlF2007 | |
calculated by Cvetkovic (2008) with period of 109 years and semimajor | Cve2008c | |
axis of 0.344 arcsec. However, our new observation shows that the | ||
system has a much shorter period and smaller semimajor axis. However, | ||
our orbit yields roughly the same total mass, with large uncertainty. | ||
The system appears to have executed nearly a full orbit since the | ||
first speckle observations taken of it in 1985 by McAlister et al. | ||
(1987). More data will be needed to confirm this orbital trajectory, | ||
but if correct, the smaller period makes the system much more | ||
attractive for future study. | Hor2015b |
refcode | metd | author | reference |
Cve2008c | orb - | Cvetkovic, Z. | 2008AJ....136.1746C |
Cve2008c | AJ 136, 1746, 2008 | ||
Hor2015b | S j | Horch, E.P., van Belle, G.T., Davidson, J.W., Jr., Ciastko, L.A., Everett, M.E., & | 2015AJ....150..151H |
Hor2015b | Bjorkman, K.S. | ||
Hor2015b | AJ 150, 151, 2015 | ||
VlF2007 | - | van Leeuwen, F. | 2007A&A...474..653V |
VlF2007 | A&A 474, 653, 2007 |
idgroup | discov | author |
1 | EGG | Eggen, O.J. |
36 | STF | Struve, F.G.W. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
02186+4017 | STF 245 | AB | 2001 | 46 | 294 | 11.4 | 7.26 | 8.03 | F3V F3V | NZD | 021836.27+401643.7 |
02186+4017 | STF 245 | AB | 2009 | 47 | 294 | 11.4 | 7.26 | 8.03 | F3V F3V | NZD | 021836.27+401643.7 |
02186+4017 | STF 245 | AB | 2010 | 49 | 293 | 11.1 | 7.26 | 8.03 | F3V F3V | NZD | 021836.27+401643.7 |
02186+4017 | STF 245 | AB | 2011 | 52 | 293 | 11.0 | 7.26 | 8.03 | F3V F3V | NZD | 021836.27+401643.7 |
02186+4017 | STF 245 | AB | 2015 | 53 | 294 | 11.0 | 7.26 | 8.03 | F3V+F3V | NZ | 021836.27+401643.7 |
02186+4017 | STF 245 | AB | 2020 | 58 | 293 | 11.3 | 7.26 | 8.03 | F3V+F3V | NT | 021836.27+401643.7 |