|
A/2025 A1 |
| ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
| Today | 4 Nov 2025 | 19.8 | 6.449 AU | 6.275 AU | 08h47m | +29°00' | 95.7° | 8.8° | 285° |
| Nearest approach | 5 Mar 2027 | 18.6 | 5.343 AU | 4.517 AU | 12h13m | +39°26' | 143.1° | 6.4° | 210° |
| Perihelion | 13 Mar 2027 | 18.6 | 5.343 AU | 4.523 AU | 12h11m | +39°56' | 142.1° | 6.6° | 197° |
A/2025 A1- 2025-11-04
astro.vanbuitenen.nl
The interactive orbit chart above shows the comet's path through the solar system and its position at the given date.
Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below.
(Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)
Light curve
The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations from COBS.
The displayed light curve is calculated under the assumption that the object remains inactive. (H=11.20; G=.15).
Charts
The all-sky chart below shows the path of the comet over the same period as the light curve. The comet's current position is marked yellow.
The following chart shows the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.
Orbital elements
The orbital elements of A/2025 A1 are:
e (Eccentricity) : 1.0021670
q (Perihelion distance) : 5.3427320
i (Inclination) : 33.42410
Ω (Longitude of ascending node) : 101.33100
ω (Argument of perihelion) : 68.10890
L (Longitude of perihelion) : 165.62301
B (Latitude of perihelion) : 30.73804
T (Time of perihelion passage) : 2461477.65230
Epoch : 2025 Nov 03
Reference : MPC188412
Classification(s): : Nearly isotropic; New (a > 10000 AU)
Ephemerides
Date Time RA (2000) DEC (2000) delta radius elong phase PA magn
2025-11-03 00:00 UT 08 47 03.1 +28 55 20 6.311 6.456 94.0 8.8 285 19.8
2025-11-04 00:00 UT 08 47 23.6 +28 58 23 6.291 6.452 94.9 8.8 285 19.8
2025-11-04 19:24 UT 08 47 39.8 +29 00 53 6.275 6.449 95.7 8.8 285 19.8
2025-11-05 00:00 UT 08 47 43.6 +29 01 29 6.271 6.448 95.9 8.8 285 19.8
2025-11-06 00:00 UT 08 48 02.9 +29 04 39 6.252 6.444 96.8 8.8 284 19.8
2025-11-07 00:00 UT 08 48 21.7 +29 07 52 6.232 6.440 97.7 8.8 284 19.8
2025-11-08 00:00 UT 08 48 39.9 +29 11 09 6.212 6.436 98.7 8.8 284 19.8
2025-11-09 00:00 UT 08 48 57.5 +29 14 29 6.193 6.432 99.6 8.7 284 19.8
2025-11-10 00:00 UT 08 49 14.5 +29 17 52 6.173 6.429 100.5 8.7 284 19.8
2025-11-11 00:00 UT 08 49 30.9 +29 21 19 6.154 6.425 101.5 8.7 284 19.8
2025-11-12 00:00 UT 08 49 46.7 +29 24 50 6.135 6.421 102.4 8.7 283 19.8
2025-11-13 00:00 UT 08 50 01.8 +29 28 24 6.115 6.417 103.4 8.6 283 19.8
2025-11-14 00:00 UT 08 50 16.4 +29 32 02 6.096 6.413 104.3 8.6 283 19.7
Terminology:
delta: distance between comet and earth in AU
radius: distance between comet and sun in AU
magn: magnitude (brightness) estimate
ra: right ascension in hours (24h = 360deg)
dec: declination in degrees
elong: elongation in degrees (angle sun-earth-comet)
phase: phase angle in degrees (angle sun-comet-earth)
AU: Astronomical Unit (mean distance between earth and sun: 149597870.7 km
Orbital elements usually provided by the MPC (Minor Planet Center).
Observations contributed by observers worldwide, via COBS (Comet Observation Database) or the MPC (Minor Planet Center)
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.
