Asteroids

329437 2002OA22 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.708

Aphelion (Q)

1.163

Eccentricity (e)

0.243

Inclination (i)

6.9

deg

Orbit period (P)

330.6

Earth MOID

0.03541

U parameter

0.0

A₂

17.2

10^-15au/days²

Next Earth close approach

Date

2031-06-02

Nominal distance (from Earth center)

0.12085

18079219

Maximum Brightness

18.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.4

mag

Diameter

400 - 800*

Taxonomic type

Rotation period (T)

2.621

Discovery Information

Discovery Date

2002-07-30

Observatory

Palomar Mountain/NEAT

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.935677

1-sigma variation

2.830E-9

Unit

Eccentricity (e)

Value

0.243215

1-sigma variation

1.616E-8

Unit

Inclination (i)

Value

6.8990

1-sigma variation

1.761E-6

Unit

Long. of Ascending Node (Ω)

Value

173.9889

1-sigma variation

3.529E-6

Unit

Arg. of Perihelion (ω)

Value

318.7151

1-sigma variation

3.731E-6

Unit

Mean Anomaly (M)

Value

51.29543

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.708107

1-sigma variation

Unit

Aphelion distance

Value

1.163248

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.251126

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.071462

1-sigma variation

Unit

MOID

Value

0.035412

1-sigma variation

Unit

Orbit Period

Value

330.5884

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

17.15908

1-sigma variation

3.70536

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	8.00774E-18	-1.25242E-17	-8.17337E-16	-1.06610E-15	-1.58375E-15	-1.08011E-14	8.82369E-9
e	-1.25242E-17	2.61225E-16	5.84797E-15	-7.17944E-15	1.84368E-14	-5.33230E-15	-2.18032E-8
i	-8.17337E-16	5.84797E-15	3.10105E-12	5.66715E-12	-5.07696E-12	4.59984E-13	-8.89607E-7
Ω	-1.06610E-15	-7.17944E-15	5.66715E-12	1.24529E-11	-1.09825E-11	-5.39290E-15	-1.43879E-6
ω	-1.58375E-15	1.84368E-14	-5.07696E-12	-1.09825E-11	1.39208E-11	-3.18583E-12	-4.66375E-6
M	-1.08011E-14	-5.33230E-15	4.59984E-13	-5.39290E-15	-3.18583E-12	2.85857E-11	-4.84180E-6
A₂	8.82369E-9	-2.18032E-8	-8.89607E-7	-1.43879E-6	-4.66375E-6	-4.84180E-6	1.37297E1

Date of computation: 2025-09-10 00:30 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

2.621

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

0.2

Unit

mag

Source

[1]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.365

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[3]

Diameter

Value

400 - 800*

Unit

Source

[3]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Visual S

Unit

Source

[4]

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Warner, B.D. (2014) MPB 41,41-47. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2013 JUNE-SEPTEMBER) (1627,9950,11405,24445,152664,168378,329437, 350988,361071,368664,2006EE1,2013OM9,2013QJ10) 2.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	Estimation	Estimated from absolute magnitude
[4]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage
[5]	EARN	1.) deLeon, J. et al. (2010) Astron. Astrophys 517, A23. (Observations, compositional, and physical characterization of near-Earth and Mars-crosser asteroids from a spectroscopic survey)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7729

Unit

Source

[1]

Unobserved

Value

748

Unit

Source

[1]

Normalized RMS of residuals

Value

0.47352

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-07-30.16542

Unit

Source

[2]

Last Observation

Value

2023-09-27.619306

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

959 (5)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2013-09-19

Unit

Source

[3]

Last Observation

Value

2013-09-29

Unit

Source

[3]

Delay (Discarded)

Value

6 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

6 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 329437 2002OA22 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1955-09-09 13:19	1.8	0.1259488	0.1259424	0.0000021
EARTH	1964-05-29 16:40	< 1 min	0.1196582	0.1196576	0.0000002
EARTH	1965-10-02 21:07	< 1 min	0.0377638	0.0377622	0.0000006
EARTH	1974-07-29 23:33	< 1 min	0.1759033	0.1759032	0.0000000
EARTH	1983-06-06 14:08	< 1 min	0.1730122	0.1730112	0.0000003
EARTH	1984-09-17 09:41	< 1 min	0.1030174	0.1030166	0.0000003
EARTH	1993-05-26 01:55	< 1 s	0.1441816	0.1441812	0.0000001
EARTH	1994-10-03 04:41	< 1 s	0.0905393	0.0905387	0.0000002
EARTH	2003-08-21 10:48	< 1 min	0.1602697	0.1602696	0.0000000
EARTH	2012-05-31 15:40	< 1 s	0.1197128	0.1197127	0.0000000
EARTH	2013-10-02 12:40	< 1 s	0.0357461	0.0357461	0.0000000
EARTH	2022-08-11 17:02	< 1 min	0.1693072	0.1693072	0.0000000
EARTH	2031-06-02 05:30	< 1 s	0.1208521	0.1208520	0.0000000
EARTH	2032-10-02 01:05	< 1 s	0.0357129	0.0357129	0.0000000
VENUS	2041-03-18 19:28	< 1 min	0.0480705	0.0480701	0.0000002
EARTH	2041-08-09 09:02	< 1 min	0.1712036	0.1712028	0.0000002
EARTH	2050-06-03 02:42	< 1 min	0.1257966	0.1257926	0.0000013
EARTH	2051-10-01 12:05	< 1 min	0.0438575	0.0438503	0.0000024
EARTH	2060-04-17 22:01	6.9	0.1953254	0.1953127	0.0000042
EARTH	2060-07-17 16:32	5.5	0.1722619	0.1722586	0.0000011
EARTH	2061-09-30 11:34	< 1 min	0.1873453	0.1873178	0.0000092
EARTH	2070-09-09 03:36	4.4	0.1259385	0.1259239	0.0000049
EARTH	2079-05-30 19:29	< 1 min	0.1294628	0.1294488	0.0000047
EARTH	2080-10-03 00:33	< 1 min	0.0706637	0.0706314	0.0000108
EARTH	2089-08-19 07:39	6.5	0.1624497	0.1624409	0.0000029
EARTH	2098-06-02 08:48	< 1 min	0.1204386	0.1204374	0.0000004
EARTH	2099-10-02 19:25	< 1 min	0.0380897	0.0380893	0.0000001
EARTH	2108-07-29 04:32	3.9	0.1738009	0.1738005	0.0000001
EARTH	2117-06-06 14:15	< 1 min	0.1511493	0.1511247	0.0000082
EARTH	2118-09-25 07:06	4.1	0.0810469	0.0810167	0.0000101
VENUS	2121-10-20 11:55	1.6	0.0474309	0.0474227	0.0000027

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
249.12184035	267.78704731	0.03548866	MINIMUM
104.31209025	147.40210965	0.11891176	MINIMUM
170.04992537	203.21451512	0.17497710	SADDLE
356.34095743	25.41356499	0.28596204	SADDLE
1.91204209	212.38842989	1.72066403	SADDLE
182.46428199	33.01496806	2.14757236	MAXIMUM

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MOID Plots

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