Asteroids

2023AK help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.469

Aphelion (Q)

1.139

Eccentricity (e)

0.417

Inclination (i)

5.4

deg

Orbit period (P)

263.3

Earth MOID

0.00594

U parameter

6.3

Next Earth close approach

Date

2027-12-12

Nominal distance (from Earth center)

0.16284

24360297

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.7

mag

Diameter

8 - 17*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-01-12

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

0.804030

1-sigma variation

0.000024

Unit

Eccentricity (e)

Value

0.416594

1-sigma variation

0.000148

Unit

Inclination (i)

Value

5.4080

1-sigma variation

0.0028

Unit

Long. of Ascending Node (Ω)

Value

111.0667

1-sigma variation

0.0012

Unit

Arg. of Perihelion (ω)

Value

144.9542

1-sigma variation

0.0012

Unit

Mean Anomaly (M)

Value

238.97260

1-sigma variation

0.08647

Unit

Perihelion distance

Value

0.469076

1-sigma variation

Unit

Aphelion distance

Value

1.138984

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.024830

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.522455

1-sigma variation

Unit

MOID

Value

0.005937

1-sigma variation

Unit

Orbit Period

Value

263.3340

1-sigma variation

Unit

U parameter

Value

6.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.78157E-10	-3.56468E-9	-6.81905E-8	-2.80323E-8	-2.86035E-8	-2.07915E-6
e	-3.56468E-9	2.19957E-8	4.20693E-7	1.72878E-7	1.75980E-7	1.28222E-5
i	-6.81905E-8	4.20693E-7	8.04762E-6	3.30723E-6	3.36769E-6	2.45270E-4
Ω	-2.80323E-8	1.72878E-7	3.30723E-6	1.35940E-6	1.38581E-6	1.00816E-4
ω	-2.86035E-8	1.75980E-7	3.36769E-6	1.38581E-6	1.42344E-6	1.02797E-4
M	-2.07915E-6	1.28222E-5	2.45270E-4	1.00816E-4	1.02797E-4	7.47751E-3

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

27.683

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

8 - 17*

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

985

Unit

Source

[1]

Normalized RMS of residuals

Value

0.530323

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-01-12.473502

Unit

Source

[2]

Last Observation

Value

2023-01-15.74614

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (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 2023AK 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	1951-01-04 10:28	> 1 w	0.1084693	0.0131235	0.0788915
EARTH	1955-11-26 10:42	> 1 w	0.1587594	0.1210455	0.0183857
VENUS	1957-11-08 23:26	> 1 d	0.0313540	0.0209964	0.0573813
EARTH	1960-10-31 11:04	1012.8	0.1049828	0.0940851	0.0072267
EARTH	1964-01-15 23:15	379.5	0.0341081	0.0030208	0.0302597
EARTH	1968-12-23 02:52	> 1 w	0.1469128	0.0739061	0.0271444
VENUS	1973-07-01 13:32	> 1 d	0.0304892	0.0053354	0.1287593
EARTH	1973-11-14 20:38	> 1 w	0.1366982	0.1003054	0.0395709
VENUS	1977-10-24 08:59	> 1 d	0.0495991	0.0060466	0.0419448
EARTH	1978-11-01 11:43	527.0	0.1205827	0.0990107	0.0088382
EARTH	1982-01-15 12:14	311.0	0.0366641	0.0052526	0.0457516
EARTH	1986-12-31 05:33	> 1 w	0.1249207	0.0233778	0.0526779
VENUS	1987-05-19 13:02	> 1 d	0.0394389	0.0216138	0.1080730
VENUS	1991-09-10 16:31	> 1 d	0.0311929	0.0215775	0.1115889
EARTH	1991-11-30 18:24	> 1 w	0.1618406	0.1442518	0.0155173
MERCURY	1995-11-21 13:43	> 1 w	0.0484217	0.0482901	0.0090269
EARTH	1996-11-01 23:41	> 1 d	0.0918104	0.0912248	0.0121135
EARTH	2000-01-14 18:37	> 1 d	0.1323131	0.0064306	0.1167065
EARTH	2005-01-10 06:18	> 1 w	0.0724409	0.0084356	0.0770808
EARTH	2009-12-08 02:05	> 1 w	0.1642978	0.1640873	0.0006074
EARTH	2014-11-05 12:48	1072.5	0.1040776	0.0930323	0.0051629
VENUS	2015-12-13 22:09	110.2	0.0061171	0.0061122	0.0000858
EARTH	2018-01-12 17:04	53.1	0.1906492	0.1864537	0.0013985
EARTH	2019-11-03 05:13	20.3	0.1641373	0.1627857	0.0004511
EARTH	2023-01-15 05:30	< 1 s	0.0101359	0.0101237	0.0000041
EARTH	2027-12-12 06:41	505.5	0.1628385	0.1626287	0.0000707
EARTH	2032-11-02 09:01	199.9	0.0921385	0.0904360	0.0006669
EARTH	2036-01-15 08:12	86.8	0.1086693	0.0993701	0.0031004
EARTH	2040-12-30 19:18	1003.9	0.1253917	0.1196745	0.0019085
VENUS	2041-03-03 08:11	263.2	0.0347616	0.0209639	0.0046431
EARTH	2045-11-20 18:55	323.7	0.1487313	0.1470597	0.0005591
VENUS	2050-09-30 03:10	117.3	0.0261038	0.0230458	0.0012023
EARTH	2050-11-01 14:06	1.1	0.1190976	0.1157591	0.0011319
EARTH	2054-01-15 12:46	36.1	0.0261747	0.0134874	0.0043914
EARTH	2058-12-27 03:36	510.4	0.1370982	0.1345059	0.0008645
EARTH	2063-11-21 22:51	397.1	0.1488550	0.1474802	0.0004610
MERCURY	2066-06-21 03:43	860.4	0.0498169	0.0480477	0.0006074
MERCURY	2067-03-08 09:09	771.5	0.0470976	0.0469299	0.0002170
EARTH	2068-11-01 04:17	25.4	0.1004368	0.0950285	0.0020327
EARTH	2072-01-16 00:41	81.7	0.0725877	0.0561002	0.0055045
VENUS	2075-01-03 02:48	430.5	0.0265399	0.0066578	0.0076021
EARTH	2077-01-06 10:47	633.9	0.0960861	0.0905548	0.0018460
VENUS	2079-04-26 08:56	24.2	0.0129839	0.0111258	0.0006368
EARTH	2081-12-06 05:53	1171.3	0.1629775	0.1621427	0.0002831
EARTH	2086-11-04 05:01	869.8	0.0949113	0.0895667	0.0026640
VENUS	2088-11-19 16:59	829.5	0.0429627	0.0213156	0.0123253
EARTH	2090-01-13 15:07	462.0	0.1600113	0.1216294	0.0128012
EARTH	2091-11-04 04:14	447.7	0.1946700	0.1609877	0.0115574
VENUS	2093-03-14 17:24	941.6	0.0452019	0.0212534	0.0149996
EARTH	2095-01-13 00:46	1421.2	0.0510440	0.0182425	0.0113021
EARTH	2099-12-09 08:09	> 1 d	0.1633036	0.1625213	0.0002781
EARTH	2104-11-04 05:53	79.5	0.0929699	0.0920522	0.0003157
EARTH	2108-01-15 21:06	214.4	0.1383965	0.1231568	0.0050820
EARTH	2113-01-10 20:53	> 1 d	0.0761333	0.0535058	0.0075774
VENUS	2113-02-26 22:23	720.2	0.0414698	0.0070627	0.0125670
EARTH	2117-12-04 14:14	> 1 d	0.1627027	0.1603129	0.0008263
VENUS	2122-09-25 07:59	347.5	0.0483052	0.0333893	0.0052859
EARTH	2122-11-03 10:27	113.5	0.0884201	0.0882888	0.0002237

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
237.25703320	12.21252018	0.00602040	MINIMUM
124.78228118	297.62252220	0.08926854	MINIMUM
177.40546546	332.65140917	0.16461623	SADDLE
0.94773261	154.54455681	0.54675240	SADDLE
1.44208014	335.36440590	1.45388601	SADDLE
181.01331457	154.94416641	2.15315721	MAXIMUM

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MOID Plots

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