SpaceAtlas Space Object Data
NASA JPL SBDB · 435441

435441

435441 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.253 AU it takes 1.40 yr to circle the Sun.

Apollo Observations: 191
Orbital Period · P
1.40 yr
v(q)
41.5 km/s
v(Q)
17.1 km/s
Diameter · ≈
0.35 km
TJ
5.04
Eccentricity · e
0.4177

Orbit and dynamics

The path is an ellipse reaching 0.73 AU from the Sun at perihelion and 1.776 AU at aphelion, a radial span of 1.046 AU.

Applying Kepler's third law to a = 1.253 AU gives an orbital period of 1.40 yr, or about 512 days.

The high eccentricity (0.418) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.07° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 41.5 km/s at perihelion and falls to 17.1 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 = 20.01 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.35 km.

Observation record and orbit quality

The current orbit solution is based on 191 observations and has a weighted RMS residual of 0.5798 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
1.253 AU
Eccentricity
0.4177
Perihelion
0.73 AU
Aphelion
1.776378 AU
Inclination
8.07°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
250.47°

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
2036-Oct-12 05:03 0.190756 AU
28536695 km
10.24 km/s
2043-Oct-24 02:06 0.155699 AU
23292217 km
10.25 km/s
2050-Oct-31 08:24 0.126446 AU
18915999 km
11.04 km/s
2057-Nov-15 02:00 0.146840 AU
21966969 km
15.92 km/s
2060-May-16 20:46 0.123633 AU
18495267 km
13.32 km/s
2074-Oct-24 00:41 0.156248 AU
23374395 km
10.30 km/s
2077-May-14 19:20 0.145622 AU
21784692 km
15.21 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
20.01

Orbit Quality

RMS
0.57982
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.