Asteroids

2023JZ4 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.819

Aphelion (Q)

4.452

Eccentricity (e)

0.689

Inclination (i)

3.2

deg

Orbit period (P)

1562.8

Earth MOID

0.01221

U parameter

7.3

Next Earth close approach

Date

2040-09-30

Nominal distance (from Earth center)

0.06937

10378083

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.1

mag

Diameter

26 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-05-13

Observatory

Pan-STARRS 1, Haleakala

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

2.635594

1-sigma variation

0.002358

Unit

Eccentricity (e)

Value

0.689136

1-sigma variation

0.000310

Unit

Inclination (i)

Value

3.2124

1-sigma variation

0.0009

Unit

Long. of Ascending Node (Ω)

Value

79.4293

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

225.6136

1-sigma variation

0.0011

Unit

Mean Anomaly (M)

Value

199.59523

1-sigma variation

0.26757

Unit

Perihelion distance

Value

0.819311

1-sigma variation

Unit

Aphelion distance

Value

4.451877

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.684655

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.082766

1-sigma variation

Unit

MOID

Value

0.012211

1-sigma variation

Unit

Orbit Period

Value

1562.8457

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.55802E-6	7.30539E-7	2.00710E-6	1.81823E-6	-2.61595E-6	-6.30798E-4
e	7.30539E-7	9.60209E-8	2.63811E-7	2.38982E-7	-3.43831E-7	-8.29112E-5
i	2.00710E-6	2.63811E-7	7.24932E-7	6.55877E-7	-9.43721E-7	-2.27793E-4
Ω	1.81823E-6	2.38982E-7	6.55877E-7	5.98838E-7	-8.60997E-7	-2.06356E-4
ω	-2.61595E-6	-3.43831E-7	-9.43721E-7	-8.60997E-7	1.23879E-6	2.96893E-4
M	-6.30798E-4	-8.29112E-5	-2.27793E-4	-2.06356E-4	2.96893E-4	7.15913E-2

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

25.063

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

26 - 60*

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

872

Unit

Source

[1]

Normalized RMS of residuals

Value

0.484637

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-05-13.473782

Unit

Source

[2]

Last Observation

Value

2023-05-29.05203

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

90 (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 2023JZ4 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	2010-08-15 01:37	> 1 w	0.1773529	0.1023919	0.0298790
EARTH	2023-05-29 16:16	< 1 s	0.0153779	0.0153607	0.0000057
EARTH	2040-09-30 10:46	> 1 w	0.0693732	0.0486408	0.1150341
EARTH	2053-05-23 12:47	> 1 w	0.0964502	0.0037365	0.3151752
EARTH	2083-07-20 18:53	1168.3	0.1943234	0.1881194	0.0020682
EARTH	2100-09-17 18:59	> 1 w	0.0990831	0.0419511	0.1473858

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
333.63837950	145.15385712	0.01144417	MINIMUM
25.72025729	259.68400790	0.05516861	MINIMUM
0.02145276	203.27454333	0.19527697	SADDLE
359.60411892	22.27246848	1.80770291	SADDLE
179.94297995	22.66398027	3.46806402	SADDLE
179.89567297	202.64127350	5.46629341	MAXIMUM

Download:

MOID Plots

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