Asteroids

2023HL help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.032

Aphelion (Q)

1.086

Eccentricity (e)

0.026

Inclination (i)

1.3

deg

Orbit period (P)

398.2

Earth MOID

0.01480

U parameter

3.9

Next Earth close approach

Date

2035-06-23

Nominal distance (from Earth center)

0.03424

5121853

Maximum Brightness

21.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.9

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-04-16

Observatory

Pan-STARRS 2, 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

1.059173

1-sigma variation

0.000001

Unit

Eccentricity (e)

Value

0.025648

1-sigma variation

0.000001

Unit

Inclination (i)

Value

1.2605

1-sigma variation

4.248E-5

Unit

Long. of Ascending Node (Ω)

Value

79.9465

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

194.1806

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

72.89999

1-sigma variation

0.00120

Unit

Perihelion distance

Value

1.032007

1-sigma variation

Unit

Aphelion distance

Value

1.086338

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.100740

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.015894

1-sigma variation

Unit

MOID

Value

0.014798

1-sigma variation

Unit

Orbit Period

Value

398.1517

1-sigma variation

Unit

U parameter

Value

3.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.03520E-12	1.44920E-12	6.04628E-11	8.50392E-11	-7.76958E-10	-1.71142E-9
e	1.44920E-12	1.03363E-12	4.29536E-11	6.04408E-11	-5.52093E-10	-1.21937E-9
i	6.04628E-11	4.29536E-11	1.80469E-9	2.51190E-9	-2.30641E-8	-5.08662E-8
Ω	8.50392E-11	6.04408E-11	2.51190E-9	4.77847E-9	-3.36598E-8	-7.15557E-8
ω	-7.76958E-10	-5.52093E-10	-2.30641E-8	-3.36598E-8	3.01816E-7	6.49597E-7
M	-1.71142E-9	-1.21937E-9	-5.08662E-8	-7.15557E-8	6.49597E-7	1.44278E-6

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

26.891

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

11 - 25*

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

121

Unit

Source

[1]

Unobserved

Value

794

Unit

Source

[1]

Normalized RMS of residuals

Value

0.533767

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-03-26.35055

Unit

Source

[2]

Last Observation

Value

2023-07-25.01446

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

51 (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 2023HL 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	1962-11-13 09:08	> 1 mo	0.0912437	0.0896754	2.1828156
EARTH	1976-03-29 13:37	> 1 mo	0.0449399	0.0240809	1.7308873
EARTH	1976-06-09 12:44	> 1 mo	0.0402571	0.0120983	2.4160412
EARTH	1988-06-13 22:39	> 1 w	0.0205147	0.0116537	0.0695671
EARTH	1998-06-03 03:16	212.9	0.0423656	0.0215230	0.0069505
EARTH	2009-06-16 05:24	92.3	0.0144907	0.0140250	0.0001566
EARTH	2023-06-17 04:02	< 1 min	0.0346711	0.0346679	0.0000011
EARTH	2035-06-23 07:32	2.6	0.0342375	0.0338259	0.0001373
EARTH	2049-06-22 10:21	> 1 d	0.0250565	0.0149210	0.0035257
EARTH	2061-01-07 02:41	> 1 mo	0.1101270	0.1101163	0.0003342
EARTH	2072-06-26 11:31	> 1 w	0.0228361	0.0144123	0.1342162
EARTH	2086-07-08 01:54	> 1 mo	0.0224214	0.0168853	3.2136749
EARTH	2086-09-14 00:41	> 1 mo	0.0246755	0.0107726	3.1565470
EARTH	2104-10-16 22:32	> 1 mo	0.0191177	0.0128711	30.8353925

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
355.87506415	167.52437605	0.01665570	MINIMUM
185.03648849	356.90712661	0.10284623	SADDLE
3.13119795	355.08897782	2.01575123	SADDLE
182.90730184	174.86503720	2.10253494	MAXIMUM

Download:

MOID Plots

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