Goldstone radar images of asteroid 2023 DZ2 taken 25 March 2023.
Discovery[1][2]
Discovered by
EURONEAR
Discovery site
Roque de los Muchachos Observatory
Discovery date
27 February 2023
Designations
MPC designation
2023 DZ2
Minor planet category
NEO
Apollo
Orbital characteristics[1]
Epoch 25 February 2023 (JD 2460000.5)
Uncertainty parameter 1
Observation arc
72 days (includes highly precise radar observations)[1]
Earliest precovery date
14 January 2023
Aphelion
3.317±0.0002 AU
Perihelion
0.99388 AU
Semi-major axis
2.155±0.0001 AU
Eccentricity
0.5389±0.00003
Orbital period (sidereal)
3.165±0.0003 yr (1,156±0.1 days)
Mean anomaly
348.67°±0.001°
Mean motion
0° 18m 38.16s / day
Inclination
0.08143°
Longitude of ascending node
187.91°±0.0005°
Time of perihelion
2023-Apr-04[3]
Argument of perihelion
5.96°±0.0005°
Earth MOID
0.000048 AU (7.2 thousand km; 0.019 LD)
Physical characteristics
Dimensions
40–90 meters (CNEOS)[4]
≈54 m (180 ft)[5]
Synodic rotation period
0.105 hours (6.3 min)[6]
Apparent magnitude
10.1 (at closest approach 2023)[7]
Absolute magnitude (H)
24.2±0.4 mag[1]
2023 DZ2 is an asteroid roughly 70 meters in diameter, classified as a near-Earth object of the Apollo group, and originally a Virtual Impactor (VI). It was first observed on 27 February 2023, when it was 0.11 AU (16 million km) from Earth, with the Isaac Newton Telescope by Ovidiu Vaduvescu, Freya Barwell, and Kiran Jhass (ING and University of Sheffield student support astronomers) within the EURONEAR project.[2] It passed 174,644 ± 0.9 km (108,518.75 ± 0.56 mi) of Earth on March 25, 2023.[1] This is a little less than half the distance to the Moon. This was the largest asteroid to approach this close since 2019 OK.[6] On March 21, 2023 with a 66-day observation arc, it was removed from the Sentry Risk Table.[8] Due to the highly precise radar observations on 25 March 2023 we know that the 2004 Earth approach was closer than the 2023 approach.[1]
2023 DZ2 Earth approaches for 2004, 2023, 2026
Date & time
Nominal distance
uncertainty region (3-sigma)
2004-Apr-18 23:57 ± 22 minutes
129737 km[1]
± 3000 km[9]
2023-Mar-25 19:49[10][a]
174644 km[1]
± 0.9 km[11]
2026-Apr-04 02:01 ± 2 minutes
1012259 km[1]
± 120 km[12]
The 2023 approach was visible to amateur astronomers with modest telescopes and telescopes equipped with an image sensor. From 20–24 March 2023 it was visible in the constellation of Cancer.[7] At about 17:20 UT on the 25th the asteroid brightened to about apparent magnitude 10.1[7][b] while over Southeast Asia, and might have been visible to advanced observers using 10×50 binoculars.[c] But for many locations the asteroid did not get brighter than magnitude 12 before setting and was out of the reach of binoculars.
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2023DZ2 is an asteroid roughly 70 meters in diameter, classified as a near-Earth object of the Apollo group, and originally a Virtual Impactor (VI). It...
of about ±5 thousand km. It was removed from the risk table on 1 May 2023. 2023DZ2 (diameter ~56 meters) with a 63 day observation arc showed a 1 in 430...
km. "JPL Small-Body Database Browser: (2023DZ2)". Jet Propulsion Laboratory. Retrieved 17 March 2023. "2023DZ2". Minor Planet Center. International Astronomical...
The following scientific events occurred in 2023. 3 April Five employees at the National Hurricane Center publish a tropical cyclone report (TCR) on Hurricane...
A. (24 June 2023). "Discovery and physical characterization as the first response to a potential asteroid collision: The case of 2023DZ2". Astronomy...
σ-symmetry orbitals form bonding and anti-bonding combinations with the dz2 and dx2−y2 orbitals. The dxy, dxz and dyz orbitals remain non-bonding orbitals...
orbitals of low energy: dxy, dxz and dyz and 2 orbitals of high energy: dz2 and dx2−y2. The energy difference between these 2 sets of d-orbitals is called...
be normalized easily with the following computation: Dist = √(Dx2 + Dy2 + Dz2) Dx = Dx / Dist Dy = Dy / Dist Dz = Dz / Dist Given geometric definitions...
magnetic field. This happens because the orbitals of those two electrons (dz2 and dx2 −. y2) do not point toward neighboring atoms in the lattice, and...
orbitals on oxygen overlap with empty sulfur d orbitals (principally the dz2 and dx2–y2). However, in this description, despite there being some π character...
with respect to the z-velocity component of particle 2, defined by vz,2 = dz2/dt, is just ∂L/∂vz,2; no awkward chain rules or total derivatives need to...
0 m = 0 m = ±1 m = 0 m = ±1 m = ±2 m = 0 m = ±1 m = ±2 m = ±3 s pz px py dz2 dxz dyz dxy dx2−y2 fz3 fxz2 fyz2 fxyz fz(x2−y2) fx(x2−3y2) fy(3x2−y2) n =...
dimanganese decacarbonyl The primary Mn-Mn σ-bonding orbital is composed of two dz2 orbitals, represented by the HOMO-9. Other large contributions made in this...
December 2011. "Circassian Quran Website". Circassian Quran. Retrieved 6 June 2023. "UNESCO Map of World's language in Danger" (PDF). Archived from the original...
1956 Corpus Christi (auxiliary), I Brownsville 622 Stephen Kocisko 607 486 DZ2 1956 I Passaic of the Byzantines, IV Pittsburgh of the Byzantines 623 Hubert...
{\displaystyle \ll } a2, b2, one can ignore c2 everywhere except in the term c2 dz2. To move from the synchronous frame used in eq. 121 to a frame with conditions...