Asteroids

2026HL3 help

Last update: 2026-05-07 13:00 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.890

Aphelion (Q)

1.407

Eccentricity (e)

0.225

Inclination (i)

10.1

deg

Orbit period (P)

449.5

Earth MOID

0.01641

U parameter

6.7

Next Earth close approach

Date

2037-10-04

Nominal distance (from Earth center)

0.09062

13556482

Maximum Brightness

22.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-04-22

Observatory

Observatorio Campo dos Amarais

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.148444

1-sigma variation

0.000121

Unit

Eccentricity (e)

Value

0.225393

1-sigma variation

0.000112

Unit

Inclination (i)

Value

10.1406

1-sigma variation

0.0042

Unit

Long. of Ascending Node (Ω)

Value

215.5006

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

75.6299

1-sigma variation

0.0041

Unit

Mean Anomaly (M)

Value

343.63352

1-sigma variation

0.00893

Unit

Perihelion distance

Value

0.889593

1-sigma variation

Unit

Aphelion distance

Value

1.407296

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.026339

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.160860

1-sigma variation

Unit

MOID

Value

0.016411

1-sigma variation

Unit

Orbit Period

Value

449.5349

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.45279E-8	1.35307E-8	5.11328E-7	2.38709E-8	-4.89130E-7	1.07587E-6
e	1.35307E-8	1.26023E-8	4.76235E-7	2.22333E-8	-4.55482E-7	1.00199E-6
i	5.11328E-7	4.76235E-7	1.79973E-5	8.40197E-7	-1.72141E-5	3.78659E-5
Ω	2.38709E-8	2.22333E-8	8.40197E-7	3.92338E-8	-8.03500E-7	1.76769E-6
ω	-4.89130E-7	-4.55482E-7	-1.72141E-5	-8.03500E-7	1.64841E-5	-3.62287E-5
M	1.07587E-6	1.00199E-6	3.78659E-5	1.76769E-6	-3.62287E-5	7.96761E-5

Date of computation: 2026-05-07 13:00 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

25.796

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

18 - 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

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.644545

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-04-22.17708

Unit

Source

[2]

Last Observation

Value

2026-05-01.019696

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

87 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2026HL3 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1957-06-09 01:11	> 1 w	0.1799048	0.1201770	0.0215943
EARTH	1968-10-05 11:18	286.1	0.1141588	0.1054094	0.0031718
EARTH	1973-05-01 09:54	694.9	0.0294384	0.0155923	0.0059892
EARTH	1984-10-05 00:02	532.0	0.1100935	0.0909676	0.0114634
EARTH	1989-05-06 16:41	> 1 d	0.0876117	0.0161366	0.0246561
EARTH	2010-04-21 09:42	955.5	0.1701345	0.1205529	0.0165411
EARTH	2021-10-04 14:33	137.2	0.1039191	0.0975744	0.0024039
EARTH	2026-04-29 21:54	< 1 s	0.0171816	0.0171598	0.0000073
EARTH	2037-10-04 16:38	9.7	0.0906195	0.0891363	0.0019121
EARTH	2042-04-29 03:51	> 1 d	0.0250766	0.0164978	0.0133302
EARTH	2064-10-07 14:38	519.2	0.1464292	0.1043046	0.0157757
EARTH	2069-05-03 22:19	> 1 d	0.0577806	0.0155213	0.0222540
EARTH	2080-10-04 20:09	36.8	0.0904331	0.0882694	0.0026768
EARTH	2085-04-27 05:18	559.9	0.0551630	0.0341164	0.0072314
EARTH	2107-10-09 18:20	1078.3	0.1500322	0.0967914	0.0218245
EARTH	2112-05-05 23:29	> 1 d	0.0718412	0.0148144	0.0325998
EARTH	2123-10-06 21:11	311.7	0.0866528	0.0861729	0.0018367

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
300.42382746	114.29675277	0.01641054	MINIMUM
67.48810243	268.04956741	0.08880670	MINIMUM
6.40101778	194.95510808	0.20877452	SADDLE
183.11923676	8.91587676	0.46954956	SADDLE
0.38648900	7.13172814	1.86634681	SADDLE
178.87332377	185.53041693	2.41542468	MAXIMUM

Download:

MOID Plots

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