Position

• Equatorial: 08^h16^m17.96^s, -34^d15^m24.9^s (Gaia)
• Galactic: l=252.53, b=+0.55

Finding Chart:

Warner & Woudt (2009)

Brigntness:

Optical G=20.0 (Gaia); X-rays: 9.3x10^-15 ergs cm^-2s^-1 (4XMM-DR11)

IP Credential:

** (Possible): While the orbital period is beyond doubt, the 524 s signal was originally detected when accretion component couldn't have been the dominant light source (an eclipse was not obvious then), and weakened as the post-nova became fainter and a deep eclipse revealed itself. This is strange for a spin signal of an IP.

Periods:

• Orbital: 0.11119 d = 2.6687 hr = 9607 s, seen in optical photometry.

  HJD = 2454888.3280 + 0.11119E

  (Warner & Woudt 2009) for the eclipse minimum.
• Spin ?: 524 s ?
• Others:

Inclination:

High (eclipsing)

Distance:

>1.65 kpc (DR2 parallax uncertain)

4800 (2900-6800) pc (Gaia EDR3; parallax: 0.303+/-0.395 mas)

References

1. Warner & Woudt 2003 (optical photometry)
2. Naik, Banerjee & Ashok 2009 (infrered spectroscopy)
3. Worpel et al. 2020 (X-rays)

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• Page Last Updated: 01-Feb-2022