Asteroids

326683 2002WP help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.137

Aphelion (Q)

1.763

Eccentricity (e)

0.216

Inclination (i)

19.1

deg

Orbit period (P)

637.8

Earth MOID

0.15184

U parameter

0.0

Next Earth close approach

Date

2112-12-08

Nominal distance (from Earth center)

0.15678

23453622

Maximum Brightness

15.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.4

mag

Diameter

518

Taxonomic type

Rotation period (T)

6.262

Discovery Information

Discovery Date

2002-11-18

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

1.450004

1-sigma variation

7.066E-10

Unit

Eccentricity (e)

Value

0.215926

1-sigma variation

3.587E-9

Unit

Inclination (i)

Value

19.1499

1-sigma variation

3.491E-6

Unit

Long. of Ascending Node (Ω)

Value

76.2919

1-sigma variation

4.297E-6

Unit

Arg. of Perihelion (ω)

Value

1.2507

1-sigma variation

7.908E-6

Unit

Mean Anomaly (M)

Value

44.41734

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.136910

1-sigma variation

Unit

Aphelion distance

Value

1.763098

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.151842

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.746498

1-sigma variation

Unit

MOID

Value

0.151836

1-sigma variation

Unit

Orbit Period

Value

637.7525

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.99285E-19	4.06798E-19	-2.71750E-16	1.45309E-16	2.91988E-16	-1.11904E-15
e	4.06798E-19	1.28694E-17	-1.08856E-15	6.83358E-15	4.16387E-15	-8.41352E-15
i	-2.71750E-16	-1.08856E-15	1.21868E-11	-1.92572E-12	9.43814E-13	1.19929E-12
Ω	1.45309E-16	6.83358E-15	-1.92572E-12	1.84669E-11	-1.41392E-11	-2.38162E-12
ω	2.91988E-16	4.16387E-15	9.43814E-13	-1.41392E-11	6.25432E-11	-3.29106E-11
M	-1.11904E-15	-8.41352E-15	1.19929E-12	-2.38162E-12	-3.29106E-11	2.56516E-11

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

6.262

Unit

Source

[5]

Quality

Value

Unit

Source

[5]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Scomp

Unit

Source

[1]

[2]

[3]

Taxonomy (all)

Value

Unit

Source

[4]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.43

Unit

mag

Source

[6]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[6]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.315

Unit

Source

[7]

Diameter

Value

518

Unit

Source

[7]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.45

0.3545

0.29

0.6445

Unit

V-R

g-r

r-i

g-i

Source

[8]

[1]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[9]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) A. V. Sergeyev, B. Carry et al A&A, 658 (2022) A109
[2]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[3]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[4]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[5]	EARN	1.) Warner, B.D. (2017) Minor Planet Bul. 44, 98-107.
[6]	ESA Aegis	ESA orbit determination and impact monitoring system
[7]	EARN	1.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs) 2.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012.
[8]	EARN	1.) Erasmus, N.; Mommert, M.; Trilling, D.E.; Sicafoose, A.A.; et al. (2017) Astron. J. 154, A162.
[9]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7870

Unit

Source

[1]

Unobserved

Value

520

Unit

Source

[1]

Normalized RMS of residuals

Value

0.48936

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-11-18.23015

Unit

Source

[2]

Last Observation

Value

2024-06-05.195415

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1232 (10)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2016-12-06

Unit

Source

[3]

Last Observation

Value

2016-12-06

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

1 (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 326683 2002WP 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	2009-12-06 15:35	< 1 s	0.1829825	0.1829824	0.0000000
EARTH	2016-12-07 20:06	< 1 s	0.1523784	0.1523784	0.0000000
EARTH	2023-12-10 01:33	< 1 s	0.1719001	0.1719001	0.0000000
EARTH	2112-12-08 18:32	< 1 s	0.1567778	0.1567776	0.0000001
EARTH	2119-12-10 21:03	< 1 s	0.1599187	0.1599184	0.0000001

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
358.88167895	334.28539000	0.15173800	MINIMUM
179.69870293	154.79088903	0.74821605	SADDLE
358.17675869	153.47734616	2.15162144	SADDLE
178.95307062	334.22729033	2.74809569	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out