Asteroids

2023DM help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.975

Aphelion (Q)

2.260

Eccentricity (e)

0.397

Inclination (i)

1.6

deg

Orbit period (P)

751.5

Earth MOID

0.00599

U parameter

6.7

Next Earth close approach

Date

2058-02-26

Nominal distance (from Earth center)

0.16512

24701114

Maximum Brightness

22.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.8

mag

Diameter

50 - 100*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-02-19

Observatory

Moonbase South Observatory, Hakos

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

1.617627

1-sigma variation

0.000266

Unit

Eccentricity (e)

Value

0.397150

1-sigma variation

0.000103

Unit

Inclination (i)

Value

1.5843

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

13.1521

1-sigma variation

0.0023

Unit

Arg. of Perihelion (ω)

Value

189.9035

1-sigma variation

0.0020

Unit

Mean Anomaly (M)

Value

99.17580

1-sigma variation

0.11978

Unit

Perihelion distance

Value

0.975186

1-sigma variation

Unit

Aphelion distance

Value

2.260067

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.237902

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.021727

1-sigma variation

Unit

MOID

Value

0.005993

1-sigma variation

Unit

Orbit Period

Value

751.4774

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.05377E-8	2.73332E-8	8.83592E-8	6.10544E-7	-5.30290E-7	-3.18134E-5
e	2.73332E-8	1.05915E-8	3.42390E-8	2.36583E-7	-2.05483E-7	-1.23276E-5
i	8.83592E-8	3.42390E-8	1.10700E-7	7.64535E-7	-6.63958E-7	-3.98511E-5
Ω	6.10544E-7	2.36583E-7	7.64535E-7	5.28924E-6	-4.59533E-6	-2.75362E-4
ω	-5.30290E-7	-2.05483E-7	-6.63958E-7	-4.59533E-6	3.99347E-6	2.39167E-4
M	-3.18134E-5	-1.23276E-5	-3.98511E-5	-2.75362E-4	2.39167E-4	1.43482E-2

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

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

23.779

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

50 - 100*

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

916

Unit

Source

[1]

Normalized RMS of residuals

Value

0.511493

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-02-19.671245

Unit

Source

[2]

Last Observation

Value

2023-03-19.14025

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

308 (2)

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

Close Approaches for 2023DM 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
MARS	1962-11-04 21:51	> 1 w	0.0133568	0.0075084	0.3791032
EARTH	1965-04-21 21:51	> 1 mo	0.0269323	0.0233046	0.1019394
EARTH	1992-03-14 02:21	> 1 w	0.0254602	0.0066680	0.0378838
EARTH	2023-03-15 20:57	< 1 s	0.0217701	0.0217541	0.0000053
EARTH	2025-06-04 00:17	359.2	0.1472810	0.1375845	0.0032345
EARTH	2058-02-26 14:17	> 1 d	0.1651167	0.0159980	0.0508195
EARTH	2060-05-16 00:09	> 1 w	0.0217418	0.0174900	0.0217842
EARTH	2091-03-03 15:34	> 1 w	0.1159073	0.0086312	0.3366209
EARTH	2093-05-28 18:57	> 1 mo	0.0795806	0.0195262	0.2811889
MARS	2095-08-29 12:28	> 1 w	0.0143846	0.0064348	0.1657673
EARTH	2124-05-03 09:12	> 1 mo	0.0235321	0.0188240	0.4475265

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
345.60309382	78.12690784	0.00583349	MINIMUM
17.98766597	127.13656298	0.01712537	MINIMUM
3.04736264	104.50491058	0.02880233	SADDLE
180.94849350	281.82867237	1.26241575	SADDLE
2.16296753	283.16154967	1.97164190	SADDLE
180.93480793	101.82240607	3.26207958	MAXIMUM

Download:

MOID Plots

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