SpaceAtlas Space Object Data
NASA JPL SBDB · 613949

613949

613949 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.955 AU and a period of 0.93 yr.

Aten Observations: 114
Orbital Period · P
0.93 yr
v(q)
52.9 km/s
v(Q)
17.6 km/s
Diameter · ≈
0.18 km
TJ
6.18
Eccentricity · e
0.5014

Orbit and dynamics

The path is an ellipse reaching 0.476 AU from the Sun at perihelion and 1.434 AU at aphelion, a radial span of 0.958 AU.

Applying Kepler's third law to a = 0.955 AU gives an orbital period of 0.93 yr, or about 341 days.

The high eccentricity (0.501) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 10.17° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 52.9 km/s at perihelion and falls to 17.6 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 = 21.42 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.18 km.

Observation record and orbit quality

The current orbit solution is based on 114 observations and has a weighted RMS residual of 0.5436 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
0.9552 AU
Eccentricity
0.5014
Perihelion
0.476 AU
Aphelion
1.434137 AU
Inclination
10.17°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
135.09°

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
2030-Nov-27 16:57 0.301200 AU
45058834 km
23.78 km/s
2031-Nov-19 17:14 0.217849 AU
32589770 km
12.04 km/s
2032-Sep-03 05:42 0.472267 AU
70650160 km
18.34 km/s
2032-Dec-22 17:21 0.413729 AU
61893023 km
12.68 km/s
2034-Jan-18 02:33 0.449418 AU
67232006 km
13.31 km/s
2035-Feb-14 19:32 0.341958 AU
51156164 km
12.17 km/s
2035-May-04 12:44 0.428170 AU
64053334 km
12.57 km/s
2036-Mar-06 08:33 0.117401 AU
17563013 km
16.00 km/s
2037-Feb-21 04:48 0.406908 AU
60872600 km
28.27 km/s
2044-Nov-28 04:22 0.318428 AU
47636207 km
24.44 km/s
2045-Nov-18 14:21 0.205954 AU
30810345 km
12.43 km/s
2046-Sep-05 22:38 0.466884 AU
69844786 km
17.87 km/s
2046-Dec-22 00:17 0.408201 AU
61066037 km
12.61 km/s
2048-Jan-17 14:32 0.450404 AU
67379437 km
13.32 km/s
2049-Feb-13 05:24 0.348926 AU
52198566 km
12.23 km/s
2049-May-06 13:48 0.435256 AU
65113338 km
13.25 km/s
2050-Mar-07 03:10 0.118543 AU
17733706 km
15.63 km/s
2051-Feb-22 06:07 0.396020 AU
59243717 km
27.89 km/s
2058-Nov-29 05:00 0.328035 AU
49073352 km
24.79 km/s
2059-Nov-18 20:07 0.199094 AU
29783986 km
12.69 km/s
2060-Sep-06 23:36 0.463055 AU
69272049 km
17.55 km/s
2060-Dec-20 14:10 0.404452 AU
60505208 km
12.57 km/s
2062-Jan-16 06:40 0.451588 AU
67556596 km
13.33 km/s
2063-Feb-12 15:41 0.356036 AU
53262167 km
12.30 km/s
2063-May-09 14:36 0.442030 AU
66126794 km
13.92 km/s
2064-Mar-06 22:15 0.121751 AU
18213629 km
15.20 km/s
2065-Feb-22 12:31 0.380479 AU
56918919 km
27.36 km/s
2072-Nov-29 09:31 0.340446 AU
50930048 km
25.25 km/s
2073-Nov-18 06:06 0.191625 AU
28666649 km
13.03 km/s
2074-Sep-09 03:31 0.458923 AU
68653978 km
17.18 km/s
2074-Dec-20 04:38 0.400086 AU
59851965 km
12.51 km/s
2076-Jan-16 02:49 0.451838 AU
67594025 km
13.32 km/s
2077-Feb-11 10:12 0.360303 AU
53900628 km
12.34 km/s
2077-May-10 14:34 0.446181 AU
66747733 km
14.31 km/s
2078-Mar-07 13:00 0.124383 AU
18607464 km
14.96 km/s
2079-Feb-23 09:23 0.373189 AU
55828215 km
27.13 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
21.42

Orbit Quality

RMS
0.54357
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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