Asteroids

2023KT2 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.778

Aphelion (Q)

1.043

Eccentricity (e)

0.145

Inclination (i)

3.5

deg

Orbit period (P)

317.3

Earth MOID

0.00082

U parameter

5.5

Next Earth close approach

Date

2030-07-31

Nominal distance (from Earth center)

0.19935

29821816

Maximum Brightness

27.8

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

7 - 15*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-05-22

Observatory

Palomar Mountain--ZTF

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

0.910414

1-sigma variation

0.000011

Unit

Eccentricity (e)

Value

0.145164

1-sigma variation

0.000019

Unit

Inclination (i)

Value

3.5117

1-sigma variation

0.0006

Unit

Long. of Ascending Node (Ω)

Value

236.2980

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

214.9944

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

96.62179

1-sigma variation

0.01770

Unit

Perihelion distance

Value

0.778255

1-sigma variation

Unit

Aphelion distance

Value

1.042573

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.001352

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.191998

1-sigma variation

Unit

MOID

Value

0.000817

1-sigma variation

Unit

Orbit Period

Value

317.2902

1-sigma variation

Unit

U parameter

Value

5.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.18927E-10	-2.05311E-10	-6.15692E-9	-3.34439E-9	4.26373E-9	-1.93062E-7
e	-2.05311E-10	3.54442E-10	1.06292E-8	5.77384E-9	-7.36019E-9	3.33294E-7
i	-6.15692E-9	1.06292E-8	3.18763E-7	1.73198E-7	-2.20715E-7	9.99483E-6
Ω	-3.34439E-9	5.77384E-9	1.73198E-7	9.45591E-8	-1.19913E-7	5.42853E-6
ω	4.26373E-9	-7.36019E-9	-2.20715E-7	-1.19913E-7	1.53131E-7	-6.92197E-6
M	-1.93062E-7	3.33294E-7	9.99483E-6	5.42853E-6	-6.92197E-6	3.13412E-4

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

28.042

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

7 - 15*

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

[-]

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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

828

Unit

Source

[1]

Normalized RMS of residuals

Value

0.789734

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-05-22.37745

Unit

Source

[2]

Last Observation

Value

2023-06-13.388357

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

64 (1)

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 2023KT2 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	1954-02-21 07:49	> 1 mo	0.1638288	0.0537443	0.0945133
EARTH	1954-08-12 09:54	> 1 w	0.0854413	0.0638038	0.1983497
EARTH	1962-01-02 18:25	> 1 mo	0.1906741	0.1906086	0.0020276
EARTH	1969-05-15 05:31	> 1 d	0.1223852	0.0058518	0.1533353
EARTH	1969-11-20 14:56	> 1 mo	0.1707433	0.1514312	0.0332729
EARTH	1977-05-28 16:31	> 1 w	0.0269246	0.0054892	0.0262770
EARTH	1977-09-27 09:04	> 1 mo	0.1196333	0.0941525	0.0179811
EARTH	1985-01-11 05:09	> 1 w	0.1917093	0.1907260	0.0004820
EARTH	1992-05-14 09:30	241.7	0.0372651	0.0244065	0.0042927
EARTH	1992-10-27 16:58	> 1 d	0.1484327	0.1442854	0.0014434
EARTH	2000-07-08 18:59	> 1 d	0.0584629	0.0570549	0.0005327
EARTH	2008-01-22 23:26	> 1 d	0.1861666	0.1855127	0.0002201
EARTH	2008-08-09 18:20	51.5	0.1757402	0.1699517	0.0019347
EARTH	2015-05-16 12:25	32.1	0.1858316	0.1824361	0.0011318
EARTH	2015-12-05 02:11	1369.2	0.1824729	0.1819307	0.0001823
EARTH	2023-05-19 16:01	< 1 min	0.0058514	0.0058487	0.0000009
EARTH	2023-09-22 15:24	6.9	0.1317213	0.1316620	0.0000197
EARTH	2030-07-31 04:46	18.1	0.1993465	0.1971862	0.0007205
EARTH	2036-05-13 04:29	38.3	0.1817118	0.1775831	0.0013763
EARTH	2036-11-18 01:16	> 1 d	0.1924769	0.1918143	0.0002233
EARTH	2043-07-08 07:43	1349.0	0.0529874	0.0521175	0.0003193
EARTH	2056-05-11 21:35	245.4	0.0357997	0.0272753	0.0028419
EARTH	2056-10-12 19:52	> 1 d	0.1526334	0.1492840	0.0011278
EARTH	2063-03-18 06:42	> 1 w	0.1425152	0.1218929	0.0069182
EARTH	2063-07-25 02:47	> 1 d	0.0585755	0.0567514	0.0023802
EARTH	2076-05-13 12:11	1140.0	0.1970911	0.0780710	0.0396953
EARTH	2076-11-23 02:23	> 1 mo	0.1952529	0.1829817	0.0060338
EARTH	2083-05-20 00:50	> 1 w	0.0123898	0.0004744	0.0458646
EARTH	2083-09-13 12:57	> 1 d	0.1292864	0.0518170	0.0310843
EARTH	2096-02-04 07:41	> 1 mo	0.1933526	0.1013433	0.5579359
EARTH	2096-07-29 18:18	> 1 mo	0.1444054	0.0577328	2.0601635
EARTH	2102-05-13 18:42	> 1 mo	0.0160186	0.0007330	2.4682356
EARTH	2102-10-07 20:01	> 1 mo	0.1463430	0.0248388	1.1774168
EARTH	2109-02-27 06:41	> 1 mo	0.1643889	0.0059169	22.4104523
EARTH	2109-08-03 02:05	> 1 mo	0.0747209	0.0576788	33.0762825
EARTH	2122-05-11 21:15	> 1 mo	0.1106012	0.0030623	86.9471590
EARTH	2122-11-04 23:11	> 1 mo	0.1788210	0.1529509	22.0058246

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
139.66663287	133.17425267	0.00038067	MINIMUM
2.23256553	351.76176634	0.20801433	SADDLE
358.60193768	167.65411418	1.79397553	SADDLE
178.36207050	347.40317385	2.02649993	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2023KT2

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2101-05-13.704	88566.704	-0.949	0.000	3.08 ± 0.000	1.59E6	5.01E-7	1.27E-2	-8.18	0


Based on 64 optical observations (of which 1 are rejected as outliers) from 2023/05/22.377 to 2023/06/13.388.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 3.40 and 3.40 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20250805 130500.123 UTC.

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Download Impactor Table as: