SpaceAtlas Space Object Data
NASA JPL SBDB · 665326

665326

665326 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.051 AU it takes 1.08 yr to circle the Sun.

Apollo Observations: 156
Orbital Period · P
1.08 yr
v(q)
39.9 km/s
v(Q)
21.1 km/s
Diameter · ≈
0.17 km
TJ
5.77
Eccentricity · e
0.3075

Orbit and dynamics

Between its closest point (0.728 AU) and its farthest (1.374 AU), the heliocentric distance changes by 0.646 AU over every revolution.

One full revolution takes 1.08 yr (394 days), computed from the semi-major axis of 1.051 AU.

An eccentricity of 0.307 makes the orbit moderately elongated.

The orbital plane is tilted 16.53° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 39.9 km/s at perihelion and falls to 21.1 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 = 21.57 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.17 km.

Observation record and orbit quality

Astrometry from 156 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6038 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
1.051 AU
Eccentricity
0.3075
Perihelion
0.728 AU
Aphelion
1.374183 AU
Inclination
16.53°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
131.83°

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
2034-Jul-04 15:08 0.394740 AU
59052294 km
18.65 km/s
2035-Aug-29 14:22 0.227232 AU
33993435 km
12.64 km/s
2036-Apr-15 21:59 0.412589 AU
61722394 km
10.72 km/s
2036-Nov-05 07:59 0.312667 AU
46774246 km
12.62 km/s
2037-Mar-09 16:33 0.292973 AU
43828080 km
10.56 km/s
2038-Feb-11 09:11 0.245931 AU
36790749 km
14.56 km/s
2048-Jul-20 12:22 0.275457 AU
41207712 km
14.22 km/s
2049-May-14 03:02 0.418169 AU
62557198 km
9.19 km/s
2049-Sep-25 05:06 0.257764 AU
38560930 km
13.41 km/s
2050-Apr-01 05:39 0.379960 AU
56841224 km
10.95 km/s
2051-Feb-22 05:26 0.221270 AU
33101481 km
10.33 km/s
2052-Feb-16 13:30 0.393383 AU
58849223 km
20.09 km/s
2061-Jun-28 19:02 0.463508 AU
69339752 km
21.04 km/s
2062-Aug-16 23:28 0.224394 AU
33568805 km
12.43 km/s
2063-Apr-23 22:44 0.420742 AU
62942137 km
10.48 km/s
2063-Oct-24 12:07 0.299578 AU
44816258 km
13.28 km/s
2064-Mar-16 02:17 0.322502 AU
48245686 km
10.75 km/s
2065-Feb-11 09:08 0.209048 AU
31273166 km
12.64 km/s
2075-Jul-13 12:41 0.320443 AU
47937653 km
15.97 km/s
2076-May-26 14:28 0.405991 AU
60735364 km
8.08 km/s
2076-Sep-13 11:11 0.241630 AU
36147392 km
13.12 km/s
2077-Apr-07 16:07 0.397034 AU
59395455 km
10.90 km/s
2077-Nov-25 14:32 0.321198 AU
48050574 km
10.65 km/s
2078-Mar-01 04:54 0.251497 AU
37623398 km
10.33 km/s
2079-Feb-13 21:56 0.319539 AU
47802333 km
17.50 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
21.57

Orbit Quality

RMS
0.60379
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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