SpaceAtlas Space Object Data
NASA JPL SBDB · 2004 RQ252

2004 RQ252

2004 RQ252 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.124 AU it takes 1.19 yr to circle the Sun.

Apollo Observations: 98
Orbital Period · P
1.19 yr
v(q)
42.3 km/s
v(Q)
18.6 km/s
Diameter · ≈
0.11 km
TJ
5.48
Eccentricity · e
0.3883

Orbit and dynamics

Between its closest point (0.688 AU) and its farthest (1.56 AU), the heliocentric distance changes by 0.872 AU over every revolution.

One full revolution takes 1.19 yr (435 days), computed from the semi-major axis of 1.124 AU.

An eccentricity of 0.388 makes the orbit moderately elongated.

The orbital plane is tilted 7.75° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 42.3 km/s at perihelion and falls to 18.6 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 = 22.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.11 km.

Observation record and orbit quality

Astrometry from 98 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5548 arcseconds.

Condition code U = 1 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
1.124 AU
Eccentricity
0.3883
Perihelion
0.688 AU
Aphelion
1.560449 AU
Inclination
7.75°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
5.82°

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-Sep-10 05:01 0.367307 AU
54948379 km
7.64 km/s
2029-Dec-12 00:24 0.290066 AU
43393231 km
10.98 km/s
2031-May-07 06:34 0.447325 AU
66918836 km
24.98 km/s
2035-Oct-20 01:34 0.152955 AU
22881750 km
8.02 km/s
2037-Apr-26 05:41 0.224309 AU
33556186 km
18.40 km/s
2041-Oct-03 04:03 0.073483 AU
10992922 km
13.85 km/s
2043-Apr-16 07:46 0.003463 AU
518121 km
12.13 km/s
2047-Oct-16 13:12 0.101717 AU
15216612 km
9.12 km/s
2049-Apr-30 08:35 0.301136 AU
45049372 km
20.81 km/s
2053-Sep-06 22:03 0.395560 AU
59174945 km
8.15 km/s
2053-Dec-23 22:55 0.297824 AU
44553830 km
11.48 km/s
2054-Jun-06 07:32 0.494618 AU
73993755 km
9.70 km/s
2060-Feb-17 21:45 0.264408 AU
39554896 km
9.94 km/s
2060-May-01 13:14 0.303564 AU
45412600 km
7.06 km/s
2064-Sep-28 11:48 0.177693 AU
26582463 km
17.82 km/s
2066-Apr-16 03:33 0.001351 AU
202139 km
12.11 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
22.5

Orbit Quality

RMS
0.55485
Condition
1
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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