Asteroids

2023WD help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.966

Aphelion (Q)

2.881

Eccentricity (e)

0.498

Inclination (i)

9.1

deg

Orbit period (P)

974.3

Earth MOID

0.01595

U parameter

7.9

Next Earth close approach

Date

2031-11-14

Nominal distance (from Earth center)

0.03202

4790641

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.6

mag

Diameter

13 - 29*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-11-17

Observatory

Pan-STARRS 2, Haleakala

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.923377

1-sigma variation

0.002489

Unit

Eccentricity (e)

Value

0.497840

1-sigma variation

0.000660

Unit

Inclination (i)

Value

9.0798

1-sigma variation

0.0087

Unit

Long. of Ascending Node (Ω)

Value

231.6145

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

148.9046

1-sigma variation

0.0031

Unit

Mean Anomaly (M)

Value

355.58609

1-sigma variation

0.69023

Unit

Perihelion distance

Value

0.965842

1-sigma variation

Unit

Aphelion distance

Value

2.880912

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.511137

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.024447

1-sigma variation

Unit

MOID

Value

0.015949

1-sigma variation

Unit

Orbit Period

Value

974.3052

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.19407E-6	1.64374E-6	2.16754E-5	-9.05746E-7	-7.16210E-6	-1.71783E-3
e	1.64374E-6	4.36209E-7	5.75217E-6	-2.40305E-7	-1.90266E-6	-4.55866E-4
i	2.16754E-5	5.75217E-6	7.58554E-5	-3.16766E-6	-2.51167E-5	-6.01132E-3
Ω	-9.05746E-7	-2.40305E-7	-3.16766E-6	1.33460E-7	1.01676E-6	2.51203E-4
ω	-7.16210E-6	-1.90266E-6	-2.51167E-5	1.01676E-6	9.38788E-6	1.98601E-3
M	-1.71783E-3	-4.55866E-4	-6.01132E-3	2.51203E-4	1.98601E-3	4.76414E-1

Date of computation: 2026-03-17 23:26 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

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

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

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

26.552

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

13 - 29*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

862

Unit

Source

[1]

Normalized RMS of residuals

Value

0.694948

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-11-16.383503

Unit

Source

[2]

Last Observation

Value

2023-11-19.83119

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

33 (4)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2023WD from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
7 Iris	1964-01-30 05:39	> 1 mo	0.0124366	0.0044749	0.1332611
EARTH	2015-11-27 18:47	> 1 d	0.1681401	0.0004166	0.0970012
EARTH	2023-11-12 17:47	< 1 min	0.0210671	0.0209955	0.0000239
EARTH	2031-11-14 09:35	> 1 w	0.0320235	0.0151946	0.0772287
EARTH	2039-11-29 10:48	> 1 d	0.1875187	0.0515525	0.0453311
EARTH	2106-09-20 23:58	> 1 mo	0.1395630	0.1137168	0.3799472
EARTH	2114-10-25 13:57	> 1 mo	0.0699310	0.0078634	0.5859358
EARTH	2122-11-12 09:44	> 1 mo	0.0153080	0.0138463	0.1786021

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
15.68914326	306.83056313	0.01618415	MINIMUM
178.81729690	98.51293365	1.88293555	SADDLE
357.62754702	96.48627738	1.96705757	SADDLE
179.69866162	279.02269381	3.87657847	MAXIMUM

Download:

MOID Plots

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