V572 Velorum - Captured in Sydney on 26-Jul-2025
V572 Velorum. Captured from Sydney, July 27, 2025. Single 30-second exposure (no stacking).
V572 Velorum. Captured from Sydney, Aug 7, 2025. Luminosity had decayed considerably.
 | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Vela |
| Right ascension | 10h 25m 13.90s [1] |
| Declination | −53° 31′ 18.9″ [1] |
| Apparent magnitude (V) | 4.8 –22.2 [2] |
| Characteristics | |
| Variable type | Nova + SU UMa dwarf nova [3] |
| Other designations | |
| Nova Velorum 2025, PNV J10251200-5331109, V572 Vel [1] | |
V572 Velorum, also known as Nova Velorum 2025, is a bright nova in the constellation Vela discovered by John Seach, and independently by Andrew Pearce, on 25 June 2025. [1] At the time of its discovery, it had an apparent visual magnitude of 5.7, which is just visible to the naked eye. [1] It reached a peak brightness of 4.8 on June 27. [2]
All novae are binary stars, with matter from a "donor" star accreting onto a white dwarf. In the case of V572 Velorum, the orbital period is 0.12317997±0.00000010 days (2.96 h). [5] Observations of the system before the 2025 explosion show the nova has already undergone fainter outbursts with both "long" (over 13 days) and "short" (3 to 4 days) periods. It is thus classified as a dwarf nova of the SU Ursae Majoris variable type. [3] A spectrum taken of 572 Velorum on 30 June 2025 looks typical of a Fe II-type classical nova. [6]
Sequence showing the change in brightness from July 26th to August 7th
