SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 SN49

2022 SN49

2022 SN49 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.054 AU it takes 1.08 yr to circle the Sun.

Apollo Observations: 26
Orbital Period · P
1.08 yr
v(q)
32.5 km/s
v(Q)
25.9 km/s
Diameter · ≈
0.09 km
TJ
5.78
Eccentricity · e
0.1143

Orbit and dynamics

Between its closest point (0.934 AU) and its farthest (1.174 AU), the heliocentric distance changes by 0.24 AU over every revolution.

One full revolution takes 1.08 yr (395 days), computed from the semi-major axis of 1.054 AU.

An eccentricity of 0.114 makes the orbit moderately elongated.

The orbital plane is tilted 18.69° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.5 km/s at perihelion and falls to 25.9 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 = 22.87 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.09 km.

Observation record and orbit quality

Astrometry from 26 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6032 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
1.054 AU
Eccentricity
0.1143
Perihelion
0.934 AU
Aphelion
1.174472 AU
Inclination
18.69°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
287.82°

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
2034-Dec-10 01:29 0.302921 AU
45316405 km
10.17 km/s
2035-Apr-21 14:33 0.123479 AU
18472135 km
10.98 km/s
2035-Oct-28 19:00 0.192173 AU
28748681 km
10.02 km/s
2036-Jun-17 23:12 0.356694 AU
53360712 km
14.03 km/s
2047-Dec-24 20:15 0.342648 AU
51259409 km
9.75 km/s
2048-Apr-11 14:11 0.189969 AU
28418982 km
11.86 km/s
2048-Nov-03 15:42 0.182537 AU
27307118 km
9.98 km/s
2049-Jun-07 04:51 0.276678 AU
41390477 km
12.77 km/s
2049-Sep-15 15:49 0.363975 AU
54449833 km
10.50 km/s
2061-Apr-01 14:22 0.271751 AU
40653383 km
13.26 km/s
2061-Nov-11 04:55 0.187304 AU
28020237 km
9.98 km/s
2062-May-26 21:21 0.192560 AU
28806530 km
11.59 km/s
2062-Sep-30 16:52 0.311472 AU
46595552 km
10.52 km/s
2074-Mar-23 09:11 0.351919 AU
52646357 km
14.93 km/s
2074-Nov-18 11:19 0.206564 AU
30901519 km
10.04 km/s
2075-May-16 21:35 0.120579 AU
18038337 km
10.85 km/s
2075-Oct-09 23:30 0.268091 AU
40105897 km
10.34 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
22.87

Orbit Quality

RMS
0.60316
Condition
5
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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