Neptune today

Neptune today (2026-05-01): apparent position RA 3.53°, Dec 0.09°, 30.672 AU from Earth, magnitude 7.94. Computed live via VSOP87D.

VSOP87D Full Bretagnon-Francou 1988 Typical precision ~arcsec
Brasilia time: 01/05/2026 05:22

♆ Neptune at 2026-05-01T08:22:59Z UTC

Distance from Earth
30.6721 AU
4,588.49 million km
Light: 255.1 min
Apparent magnitude
7.94
Telescope
Phase angle
1.18°
Illumination 100.0%
Sun elongation
37.73°
Good visibility

Apparent equatorial coordinates (geocentric)

Right Ascension (RA):3.528025° (00:14:07)
Declination (Dec):0.090210°
Ecliptic longitude (lambda):3.273461°
Ecliptic latitude (beta):-1.319634°
Mean obliquity:23.435867°

Heliocentric position (Sun at center)

Longitude L (helio):2.092435°
Latitude B (helio):-1.354563°
Distance R (helio):29.881711701 AU
Distance (km):4,470,240,443 km

Time scales

UTC:2026-05-01 08:22:59
JD UTC:2461161.849300
JD TT:2461161.850168
Delta T:75.075 s
tau (J2000 millennia):0.026329501

About Neptune

The position above was computed with the VSOP87D theory (Bretagnon & Francou 1988), the standard analytical theory of IMCCE/Bureau des Longitudes. Values are apparent geocentric, with iterative light-time correction (3 passes), ecliptic-to-equator conversion via mean obliquity (Meeus Eq. 22.2), and freely available through open source.

Typical precision: 1-3 arcsec in RA/Dec for the 1900-2100 window, with controlled degradation up to ~arc-min at the 4000 BC and 3000 AD extremes. For maximum precision, use JPL Horizons. See the precision page for numerical validation.

Other planets

See methodology, sources, precision, planets hub.