Where is it now
- Distance from Sun
- 5.673 AU
- True anomaly
- 209.88°
- Distance from Earth
- 6.204 AU
- As of
- 22 October 2026
Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.
In the sky
- Right ascension
- 10h 22m 52s
- Declination
- +04° 35′ 08″
- Constellation
- Sextans
- Distance from Earth
- 6.19 AU
- Elongation from the Sun
- 54.3° — near the Sun — look low at dusk or dawn
Visible from both hemispheres.
From your location
See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.
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Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.
Orbital elements
- Semi-major axis
- 4.271 AU
- Eccentricity
- 0.5183
- Inclination
- 11.67°
- Orbital period
- 8.83 years
- Perihelion
- 2.057 AU
- Aphelion
- 6.485 AU
- Longitude of ascending node
- 176.08°
- Argument of periapsis
- 121.11°
- Epoch · J2000
- 2456992.5
- Orbit class · JFc
- Jupiter-family comet (P < 20 y)
- Earth MOID · 416.7 LD
- 1.0706 AU
- Tisserand (Jupiter)
- 2.736
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 1,382
- Data arc
- 35.4 years
- First observed
- 16 August 1985
- Last observed
- 8 January 2021
- Residual RMS
- 0.7 ″
- Solution · Otto Matic
- 3 May 2023
Physical properties
- Mean radius
- 1.11 km
Visual & observation
- Absolute magnitude (H)
- 13
- Total magnitude M₁ · K₁ 10.5
- 13
Discovery & classification
- Discovered by
- Maury, Alain
- Discovery date
- 16 August 1985
- Discovery site
- Palomar Mountain Observatory, California
Also known as 115P · 115P/1985 Q1 · 115P/1994 J1 · 1985 VI · 1985k · 1994 VIII · 1994h
Close approaches 10 on record
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2027-06-02 20:29:00 | Juptr | 1.1095 AU | 431.8 LD | 9.3 km/s |
| 2048-07-25 09:37:00 | Juptr | 1.0324 AU | 401.8 LD | 5.8 km/s |
| 2086-03-19 23:50:00 | Juptr | 1.3259 AU | 516.0 LD | 4.9 km/s |
| 2122-05-19 09:47:00 | Juptr | 0.3789 AU | 147.5 LD | 7 km/s |
| 2122-05-19 09:47:00 | Jupiter | 0.3789 AU | 147.5 LD | 7 km/s |
| 2143-06-19 04:22:00 | Juptr | 1.5062 AU | 586.2 LD | 8.2 km/s |
| 2180-02-29 05:21:00 | Juptr | 1.6341 AU | 636.0 LD | 4.9 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB