2023 RB

2023 RB is a Centaur that makes close approaches to Saturn and Uranus. It is approximately 20–50 kilometers (12–31 miles) in diameter. On 25 September 2024 it will pass 0.261 AU (39.0 million km) from Saturn.[2] On 6 March 2027 it will come to perihelion 8.35 AU (1.2 billion km) from the Sun.[3] Then around January 2201, it will make a second close approach to Saturn of 0.074 AU (11.1 million km) ± 6.5 million km.[5]

2023 RB closest Saturn approach around January 2201[5]
Date and time of
closest approach
Saturn distance
(AU)
Sun distance
(AU)
Velocity
relative to Saturn
(km/s)
Velocity
relative to Sun
(km/s)
Uncertainty
region
(3-sigma)
≈January 22010.074 AU (11.1 million km; 6.9 million mi; 29 LD)9.67 AU (1.447 billion km; 899 million mi)5.013.5± 6.5 million km

2023 RB
Discovery[1]
Discovered byPan-STARRS 2
Discovery siteHaleakalā Observatory
Discovery date04 September 2023
Designations
2023 RB
P11IxKf
Centaur
Orbital characteristics[2]
Uncertainty parameter 2
Observation arc10.3 years
Aphelion46.9 AU (Q)
Perihelion8.35 AU[3] (q)
27.5 AU (a)
Eccentricity0.70496 (e)
144.3 years
350.6° (M)
Inclination4.667° (i)
137.5° (Ω)
6 March 2027[3]
257.4° (ω)
Saturn MOID0.014 AU (2.1 million km)[4]
Uranus MOID0.019 AU (2.8 million km)
Physical characteristics
Mean diameter
20–50 km
10.5[4]

    References

    1. "MPEC 2023-R16 : 2023 RB". IAU Minor Planet Center. 5 September 2023. Retrieved 11 September 2023. (K23R00B)
    2. "JPL Small-Body Database : (2023 RB)". Jet Propulsion Laboratory. Retrieved 11 September 2023.
    3. "Horizons Batch for 2023 RB on 2027-Mar-06" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 11 September 2023.
    4. "2023 RB Orbit". Minor Planet Center. Retrieved 11 September 2023.
    5. "Horizons Batch for 2023 RB (from Saturn) on 2201-Jan-05" (closest Saturn approach occurs when deldot flips from negative to positive). JPL Horizons. Retrieved 11 September 2023.
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