Asteroids with Satellites Database--Johnston's Archive

(26074) Carlwirtz

compiled by Wm. Robert Johnston
last updated 9 October 2021

--Orbital and physical data--

(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)

dynamical type, primary: Mars crossing asteroid, Hungaria

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.81129147 AU
orbital period P: 2.4377587001 yr
(= 890.3913652 d)
eccentricity e: 0.088902238
perihelion distance q: 1.650263604 AU
aphelion distance Q: 1.9723193356 AU
inclination i: 31.6078398°
argument of perihelion ω: 73.465471°
ascending node Ω: 102.7997427°
mean anomaly M: 160.349263°
perihelion passage TP: 2020 May 30.406670
Epoch: 2021 Jul 01
data arc: 1977-2021 (1618 obs.)
Earth MOID: 0.754194 AU
Jupiter Tisserand invariant TJ: 3.874

orbital data, secondary:
semimajor axis as: 5.4 km [*E]
separation/primary radius as/rp:3.4 [*E]
separation/Hill radius as/rH:0.013 [*E]
orbital period Ps: 0.6713 ± 0.0008 d [W13a]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 15.01 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 3.3 km [*E]
geometric albedo: (0.16 ) [*A]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 410 km [*E]

other data, primary:
diameter dp: 3.2 km [*E]
rotation period RPp: 2.4593 ± 0.0003 h [W13a]
amplitude in mag., rotational ΔM: 0.11 ± 0.01 [W13a]
amplitude in mag., mutual events ΔM:0.09 [W13a]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: >0.8 km [*E]
diameter ratio ds/dp: >0.25 [*E]
component mag. difference ΔM: <3.0 [*E]
rotation period RPs: ?

-- (26074) Carlwirtz --discovery and notes:

Primary discovered 1977 Oct 08 from European Southern Observatory, La Silla, Chile by H.-E. Schuster. Alternate designation(s): 1977 TD, 1996 KH. Permanent number assigned 2001 Jul 05.

Named 2004 Sep 28 for Carl Wilhelm Wirtz (1875-1939) [MPC052769].

Companion discovered 2013 Jun 06 by B. D. Warner using lightcurve observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA. Announced 2013 Sep [W13a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2014, 2021 by Wm. Robert Johnston.
Last modified 9 October 2021.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.