SSV-UAI-GRAV_V4 (Eclipsing binary, Eruptive variable)

RA: 06h 33m 40.30s, DE: -00° 16' 03.22" (98.4179166667, -0.2675611104)

Ucac4: UCAC4 449-019127, UsnoB: USNO-B1.0 0897-0092338, Gaia: Gaia DR3 3119297170694436352, Gsc: GSC 04798-01192, CzeV: CzeV4538

Data:

  • Constellation: Mon
  • Variability type: EA+BY
  • Maximal brightness (Mag): 13.230 (g)
  • Minimum brightness (Mag): 13.760 (g)
  • Brightness in secondary minimum (Mag): 13.710 (g)
  • D (h): 2.200
  • Astrophysical interest: Peaks on the light curve
  • Created by: admin
Periodic elements:

  • Period (d): 1.147538000000000
  • Epoch (HJD): 2461035.43499
  • Secondary Epoch (HJD): 2461036.008759 (est.)
Additional data:

  • Discoverer: František Lomoz
  • Discovery year: 2017
Change log:

2/24/2026, Martin Mašek:

  • MD: Discovery year: Null → 2017
  • MD: Discoverer: Null → František Lomoz
  • Alternative designation: Ucac4: UCAC4 449-019127, UsnoB: USNO-B1.0 0897-0092338, Gaia: Gaia DR3 3119297170694436352, Gsc: GSC 04798-01192 → Ucac4: UCAC4 449-019127, UsnoB: USNO-B1.0 0897-0092338, Gaia: Gaia DR3 3119297170694436352, Gsc: GSC 04798-01192, CzeV: CzeV4538

2/24/2026, Filip Walter:

  • D: Null → 2.2
  • Variability type: Null → EA+BY
  • Photometric band: K → g
  • Brightness in secondary minimum: Null → 13.71
  • Minimum brightness: Null → 13.76
  • Maximal brightness: 10.181 → 13.23
  • Name: UCAC4 449-019127 → SSV-UAI-GRAV_V4
  • Astrophysical interest: Nothing → Peaks on the light curve
  • Eruptive variable: False → True
  • Eclipsing binary: False → True
  • Alternative designation: Ucac4: UCAC4 449-019127, UsnoB: USNO-B1.0 0897-0092338, Gaia: Gaia DR3 3119297170694436352 → Ucac4: UCAC4 449-019127, UsnoB: USNO-B1.0 0897-0092338, Gaia: Gaia DR3 3119297170694436352, Gsc: GSC 04798-01192

2/6/2026, Filip Walter:

  • Alternative designation: Ucac4: UCAC4 449-019127, UsnoB: USNO-B1.0 0897-0092338 → Ucac4: UCAC4 449-019127, UsnoB: USNO-B1.0 0897-0092338, Gaia: Gaia DR3 3119297170694436352

1/19/2026, Filip Walter:

  • Eclipsing binary: True → False
  • Eclipsing binary: False → True
  • Eclipsing binary: True → False
  • Epoch: Null → 2461035.434988
  • Period: Null → 1.147538
  • Eclipsing binary: False → True

12/28/2025, Filip Walter:

  • Secondary Epoch: 2461036.004 → Null
  • Epoch: 2461035.43499 → Null
  • Period: 1.147538 → Null
  • Eclipsing binary: True → False
  • Eclipsing binary: False → True
  • Secondary Epoch: Null → 2461036.003998
  • Epoch: Null → 2461035.434988
  • Period: Null → 1.147538

10/25/2025, Filip Walter:

  • Photometric band: Null → K
  • Maximal brightness: Null → 10.181
  • Name: a-CoRoT-18b → UCAC4 449-019127
  • Eclipsing binary: True → False
  • Alternative designation: → Ucac4: UCAC4 449-019127, UsnoB: USNO-B1.0 0897-0092338

Number of observations

30 x

Number of observers

4 x

Last observed before

57 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2461035.43499 + 1.147538 * E
S: M = 2461036.008759 + 1.147538 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline