SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 EN2

2023 EN2

2023 EN2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.127 AU it takes 1.20 yr to circle the Sun.

Apollo Observations: 118
Orbital Period · P
1.20 yr
v(q)
38.2 km/s
v(Q)
20.6 km/s
Diameter · ≈
0.08 km
TJ
5.5
Eccentricity · e
0.2985

Orbit and dynamics

Between its closest point (0.79 AU) and its farthest (1.463 AU), the heliocentric distance changes by 0.673 AU over every revolution.

One full revolution takes 1.20 yr (437 days), computed from the semi-major axis of 1.127 AU.

An eccentricity of 0.298 makes the orbit moderately elongated.

The orbital plane is tilted 7.79° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.2 km/s at perihelion and falls to 20.6 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 23.12 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

Astrometry from 118 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4269 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
1.127 AU
Eccentricity
0.2985
Perihelion
0.79 AU
Aphelion
1.46341 AU
Inclination
7.79°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
181.24°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2029-Mar-31 07:34 0.037166 AU
5559977 km
11.02 km/s
2029-Dec-19 21:05 0.498528 AU
74578749 km
9.53 km/s
2030-Oct-12 22:54 0.318166 AU
47596981 km
19.20 km/s
2035-Mar-23 05:07 0.223926 AU
33498890 km
16.43 km/s
2036-Oct-03 21:05 0.128566 AU
19233161 km
13.70 km/s
2041-Mar-14 23:13 0.402633 AU
60233020 km
21.73 km/s
2042-Jan-16 18:07 0.487618 AU
72946642 km
9.43 km/s
2042-Sep-24 23:14 0.048612 AU
7272313 km
8.82 km/s
2048-Feb-03 22:01 0.436648 AU
65321645 km
8.70 km/s
2048-Aug-04 18:53 0.226049 AU
33816407 km
7.89 km/s
2048-Oct-11 19:13 0.270835 AU
40516329 km
5.60 km/s
2054-Feb-27 05:21 0.339295 AU
50757763 km
7.18 km/s
2054-Jun-19 06:06 0.254591 AU
38086207 km
8.78 km/s
2054-Nov-15 20:19 0.401693 AU
60092361 km
8.01 km/s
2060-Apr-15 16:59 0.152828 AU
22862677 km
6.27 km/s
2060-Dec-05 11:04 0.470411 AU
70372457 km
9.10 km/s
2061-Oct-20 16:02 0.492529 AU
73681273 km
24.42 km/s
2066-Mar-30 03:57 0.066332 AU
9923146 km
11.87 km/s
2066-Dec-23 03:55 0.499814 AU
74771076 km
9.57 km/s
2067-Oct-11 13:17 0.274199 AU
41019543 km
17.92 km/s
2072-Mar-18 20:28 0.308267 AU
46116115 km
18.93 km/s
2073-Jan-09 23:49 0.496314 AU
74247479 km
9.57 km/s
2073-Sep-29 15:32 0.031177 AU
4663990 km
10.96 km/s
2078-Mar-11 13:24 0.494123 AU
73919707 km
24.49 km/s
2079-Jan-24 18:51 0.470407 AU
70371923 km
9.19 km/s
2079-Sep-14 10:50 0.139995 AU
20942967 km
6.65 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
23.12

Orbit Quality

RMS
0.42691
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

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