483P/PanSTARRS

483P/PanSTARRS
Canada-France-Hawaii Telescope image of split asteroid pair P/2016 J1 on 6 May 2016, showing comet-like tails on both components
Discovery[1]
Discovered byPan-STARRS 1
Discovery siteHaleakalā Observatory
Discovery date5 May 2016
Designations
P/2016 J1 (PanSTARRS)
Orbital characteristics (fragment A)[2]
Epoch21 June 2016
(JD 2457560.5)
Observation arc153 days (A)[2]
140 days (B)[3]
Earliest precovery date4 March 2016[2]
Orbit typemain-belt (outer)[4] · Encke-type[2][3] · periodic[5][6]
Aphelion3.896 AU
Perihelion2.448 AU
Semi-major axis3.172 AU
Eccentricity0.2283
Orbital period5.65 yr (2,064 days)
Inclination14.330°
199.856°
Argument of
periapsis		46.585°
Last perihelion24 June 2016[2]
TJupiter3.113
Earth MOID1.461 AU
Jupiter MOID1.227 AU
Physical characteristics
Mean diameter
<0.62+0.18
−0.10 km (A)[7]: 18 
<0.34+0.12
−0.06 m (B)[7]: 18 
0.04 (assumed)[4]
C/G[8]
B–V = 0.74±0.04 (A)[8]
B–V = 0.74±0.12 (B)[8]
V–R = 0.36±0.04 (A)[8]
V–R = 0.39±0.12 (B)[8]
Comet total
magnitude (M1)		16.4±0.4 (A)[2]
17.3±0.8 (B)[3]
Comet nuclear
magnitude (M2)		>19.95+0.18
−0.16 (A)[7]: 18 
>21.26+0.23
−0.26 (B)[7]: 18 

483P/PanSTARRS (provisional designation P/2016 J1) is a pair of active main-belt asteroids that split apart from each other in early 2010. The brightest and largest component of the pair, P/2016 J1-A, was discovered first by the Pan-STARRS 1 survey at Haleakalā Observatory on 5 May 2016. Follow-up observations by the Canada-France-Hawaii Telescope at Mauna Kea Observatory discovered the second component, P/2016 J1-B, on 6 May 2016.[9] Both asteroids are smaller than 1 kilometre (0.62 mi) in diameter, with P/2016 J1-A being roughly 0.6 km (0.37 mi) in diameter and P/2016 J1-B being roughly 0.3 km (0.19 mi) in diameter.[7]: 18  The two components recurrently exhibit cometary activity as they approach the Sun near perihelion, suggesting that their activity is driven by sublimation of volatile compounds such as water.[7]

  1. ^ Cite error: The named reference MPEC-2016-J90 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference jpldata-A was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference jpldata-B was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Moreno2017 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference MPC-object-A was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference MPC-object-B was invoked but never defined (see the help page).
  7. ^ a b c d e f Cite error: The named reference Hsieh2023 was invoked but never defined (see the help page).
  8. ^ a b c d e Cite error: The named reference Hui2017 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference CBET4276 was invoked but never defined (see the help page).