Asteroids

2023KM2 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.645

Aphelion (Q)

2.479

Eccentricity (e)

0.587

Inclination (i)

9.9

deg

Orbit period (P)

713.1

Earth MOID

0.04573

U parameter

9.0

Next Earth close approach

Date

2054-12-05

Nominal distance (from Earth center)

0.15096

22582683

Maximum Brightness

23.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.8

mag

Diameter

29 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-05-22

Observatory

Mt. Lemmon Survey

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

1.562138

1-sigma variation

0.007504

Unit

Eccentricity (e)

Value

0.587160

1-sigma variation

0.002495

Unit

Inclination (i)

Value

9.9274

1-sigma variation

0.0508

Unit

Long. of Ascending Node (Ω)

Value

230.0738

1-sigma variation

0.0174

Unit

Arg. of Perihelion (ω)

Value

110.0444

1-sigma variation

0.0298

Unit

Mean Anomaly (M)

Value

69.81947

1-sigma variation

3.02896

Unit

Perihelion distance

Value

0.644913

1-sigma variation

Unit

Aphelion distance

Value

2.479363

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.269722

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.137628

1-sigma variation

Unit

MOID

Value

0.045725

1-sigma variation

Unit

Orbit Period

Value

713.1443

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.63096E-5	1.87222E-5	3.81056E-4	1.30791E-4	-2.23483E-4	-2.27292E-2
e	1.87222E-5	6.22486E-6	1.26696E-4	4.34863E-5	-7.43048E-5	-7.55715E-3
i	3.81056E-4	1.26696E-4	2.57867E-3	8.85102E-4	-1.51237E-3	-1.53812E-1
Ω	1.30791E-4	4.34863E-5	8.85102E-4	3.03815E-4	-5.19123E-4	-5.27936E-2
ω	-2.23483E-4	-7.43048E-5	-1.51237E-3	-5.19123E-4	8.87033E-4	9.02083E-2
M	-2.27292E-2	-7.55715E-3	-1.53812E-1	-5.27936E-2	9.02083E-2	9.17457E0

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

24.789

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

29 - 70*

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

843

Unit

Source

[1]

Normalized RMS of residuals

Value

0.478683

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-05-22.38317

Unit

Source

[2]

Last Observation

Value

2023-06-01.45753

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

34 (0)

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 2023KM2 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	1972-11-30 05:44	> 1 mo	0.0764374	0.0436585	0.9567757
EARTH	1982-05-28 09:07	> 1 mo	0.0760614	0.0585609	0.7406670
EARTH	2013-12-03 21:30	> 1 w	0.1291805	0.0469190	0.4063611
EARTH	2015-11-13 05:46	> 1 mo	0.1789450	0.0581380	0.3207623
EARTH	2023-05-31 02:21	< 1 min	0.0610026	0.0602510	0.0002505
EARTH	2054-12-05 14:32	> 1 mo	0.1509559	0.0497164	1.1103922
EARTH	2056-11-14 23:41	> 1 mo	0.1605702	0.0562260	1.0886849
EARTH	2064-05-31 06:25	> 1 mo	0.0632937	0.0631036	0.0902707
EARTH	2095-12-06 08:34	> 1 mo	0.1553095	0.0519771	2.4603111
EARTH	2097-11-15 16:17	> 1 mo	0.1587481	0.0577057	2.2877695
EARTH	2105-06-01 21:40	> 1 mo	0.0655580	0.0652297	0.1990337

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
50.03655071	323.16508926	0.04567709	MINIMUM
305.62700862	146.69927440	0.06073768	MINIMUM
356.69617799	232.78412654	0.38800956	SADDLE
179.07951620	57.36357016	1.51011227	SADDLE
357.96056395	55.30870239	1.63054994	SADDLE
179.77438531	237.71522396	3.47865705	MAXIMUM

Download:

MOID Plots

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