Asteroids

2022YK4 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.978

Aphelion (Q)

1.301

Eccentricity (e)

0.142

Inclination (i)

1.6

deg

Orbit period (P)

444.1

Earth MOID

0.02037

U parameter

4.7

Next Earth close approach

Date

2039-12-01

Nominal distance (from Earth center)

0.18343

27440610

Maximum Brightness

23.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.6

mag

Diameter

20 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-12-23

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

1.139218

1-sigma variation

0.000006

Unit

Eccentricity (e)

Value

0.141746

1-sigma variation

0.000005

Unit

Inclination (i)

Value

1.6342

1-sigma variation

4.883E-5

Unit

Long. of Ascending Node (Ω)

Value

273.2108

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

252.2104

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

81.54203

1-sigma variation

0.00613

Unit

Perihelion distance

Value

0.977738

1-sigma variation

Unit

Aphelion distance

Value

1.300698

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.149185

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.086022

1-sigma variation

Unit

MOID

Value

0.020370

1-sigma variation

Unit

Orbit Period

Value

444.1283

1-sigma variation

Unit

U parameter

Value

4.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.14252E-11	2.58835E-11	2.62911E-10	1.57553E-9	-3.07744E-10	-3.43494E-8
e	2.58835E-11	2.13203E-11	2.16614E-10	1.29826E-9	-2.53917E-10	-2.82920E-8
i	2.62911E-10	2.16614E-10	2.38469E-9	1.38214E-8	-3.92365E-9	-2.86679E-7
Ω	1.57553E-9	1.29826E-9	1.38214E-8	9.14553E-8	-3.11684E-8	-1.71892E-6
ω	-3.07744E-10	-2.53917E-10	-3.92365E-9	-3.11684E-8	2.71511E-8	3.28284E-7
M	-3.43494E-8	-2.82920E-8	-2.86679E-7	-1.71892E-6	3.28284E-7	3.75503E-5

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

25.607

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

20 - 40*

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

172

Unit

Source

[1]

Unobserved

Value

833

Unit

Source

[1]

Normalized RMS of residuals

Value

0.453789

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-12-23.257329

Unit

Source

[2]

Last Observation

Value

2023-06-13.24979

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

26 (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 2022YK4 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	1952-01-26 13:28	> 1 d	0.0791188	0.0140757	0.0373517
EARTH	1952-06-09 14:47	> 1 mo	0.1643863	0.1010101	0.0230550
EARTH	1962-11-27 19:05	> 1 mo	0.1997285	0.0956382	0.0359370
EARTH	1963-05-05 09:38	> 1 d	0.1422182	0.0305496	0.0710356
EARTH	1979-03-18 10:41	> 1 mo	0.0307051	0.0304142	0.0009825
EARTH	1995-02-01 18:23	1420.9	0.0289413	0.0202157	0.0036476
EARTH	2006-01-30 20:05	171.6	0.0350250	0.0331928	0.0006171
EARTH	2023-03-29 23:16	< 1 min	0.0303935	0.0303907	0.0000009
EARTH	2039-12-01 18:33	1206.5	0.1834291	0.1822760	0.0003845
EARTH	2040-05-03 23:46	61.5	0.1117438	0.1096274	0.0007058
EARTH	2051-01-24 22:41	29.1	0.0795623	0.0786379	0.0003082
EARTH	2051-06-14 23:25	603.1	0.1644361	0.1638809	0.0001851
EARTH	2068-02-01 05:47	397.5	0.0300023	0.0269865	0.0010548
EARTH	2073-11-28 21:21	> 1 d	0.1845377	0.1794168	0.0017103
EARTH	2074-05-07 00:45	231.7	0.1154513	0.1053061	0.0033871
EARTH	2097-02-13 07:04	> 1 d	0.0230515	0.0200426	0.0041003
EARTH	2103-05-12 23:59	> 1 d	0.1931912	0.0183114	0.0881883
EARTH	2120-01-21 04:14	> 1 w	0.1485064	0.0180655	0.2391315
EARTH	2120-07-05 18:38	> 1 mo	0.1994937	0.0681791	0.1047300

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
335.51806924	34.53814267	0.02038792	MINIMUM
35.22991584	102.50607804	0.02679228	MINIMUM
9.39540235	73.09360650	0.03187973	SADDLE
184.94183333	248.12908770	0.29578367	SADDLE
6.33873630	249.58001169	1.98393138	SADDLE
184.59879452	67.82174533	2.29358988	MAXIMUM

Download:

MOID Plots

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