Asteroids

2023KK2 help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.808

Aphelion (Q)

2.204

Eccentricity (e)

0.464

Inclination (i)

27.2

deg

Orbit period (P)

675.1

Earth MOID

0.01668

U parameter

7.6

Next Earth close approach

Date

2034-11-06

Nominal distance (from Earth center)

0.07743

11583546

Maximum Brightness

19.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.7

mag

Diameter

80 - 170*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-05-22

Observatory

University of Arizona 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.506056

1-sigma variation

0.000834

Unit

Eccentricity (e)

Value

0.463645

1-sigma variation

0.000283

Unit

Inclination (i)

Value

27.2480

1-sigma variation

0.0196

Unit

Long. of Ascending Node (Ω)

Value

229.1619

1-sigma variation

0.0025

Unit

Arg. of Perihelion (ω)

Value

111.2561

1-sigma variation

0.0177

Unit

Mean Anomaly (M)

Value

187.00770

1-sigma variation

0.44617

Unit

Perihelion distance

Value

0.807781

1-sigma variation

Unit

Aphelion distance

Value

2.204332

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.411594

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.021742

1-sigma variation

Unit

MOID

Value

0.016676

1-sigma variation

Unit

Orbit Period

Value

675.0877

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.94946E-7	2.36212E-7	1.63401E-5	2.04726E-6	-1.47881E-5	-3.71942E-4
e	2.36212E-7	8.02886E-8	5.55392E-6	6.95833E-7	-5.02642E-6	-1.26423E-4
i	1.63401E-5	5.55392E-6	3.84269E-4	4.81632E-5	-3.47728E-4	-8.74539E-3
Ω	2.04726E-6	6.95833E-7	4.81632E-5	6.04184E-6	-4.35732E-5	-1.09572E-3
ω	-1.47881E-5	-5.02642E-6	-3.47728E-4	-4.35732E-5	3.14694E-4	7.91473E-3
M	-3.71942E-4	-1.26423E-4	-8.74539E-3	-1.09572E-3	7.91473E-3	1.99067E-1

Date of computation: 2026-06-04 23:11 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

22.706

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

80 - 170*

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

1080

Unit

Source

[1]

Normalized RMS of residuals

Value

0.457482

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-05-22.330527

Unit

Source

[2]

Last Observation

Value

2023-06-23.36092

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

33 (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

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 2023KK2 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
EARTH	1960-11-17 13:07	> 1 d	0.1591493	0.0132620	0.1225273
EARTH	1973-10-31 19:43	> 1 d	0.1868277	0.0692780	0.0392162
EARTH	1997-11-12 19:36	> 1 d	0.0528575	0.0172330	0.1169672
EARTH	2034-11-06 23:36	> 1 d	0.0774312	0.0151136	0.0589370
EARTH	2058-11-10 21:34	> 1 w	0.0162857	0.0159369	0.0418770
EARTH	2095-11-09 20:41	> 1 mo	0.0276048	0.0153664	5.3773986
EARTH	2119-11-19 13:43	> 1 mo	0.1605546	0.0095415	9.8505190

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
43.95735323	307.42804778	0.01730028	MINIMUM
299.08379895	148.01350611	0.24667110	MINIMUM
347.68569042	219.92051105	0.47065297	SADDLE
173.84516434	56.99940101	1.37812705	SADDLE
354.73755716	53.02459410	1.75362443	SADDLE
182.09686413	242.42469914	3.14693078	MAXIMUM

Download:

MOID Plots

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