Asteroids

2026HU help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

1.000

Aphelion (Q)

1.747

Eccentricity (e)

0.272

Inclination (i)

2.5

deg

Orbit period (P)

588.0

Earth MOID

0.00146

U parameter

6.4

Next Earth close approach

Date

2055-03-05

Nominal distance (from Earth center)

0.07082

10594254

Maximum Brightness

26.7

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

30.1

mag

Diameter

2.5 - 6*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-04-16

Observatory

University of Arizona 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.373618

1-sigma variation

0.000118

Unit

Eccentricity (e)

Value

0.272115

1-sigma variation

0.000063

Unit

Inclination (i)

Value

2.5087

1-sigma variation

0.0005

Unit

Long. of Ascending Node (Ω)

Value

203.4577

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

348.4572

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

40.71944

1-sigma variation

0.00581

Unit

Perihelion distance

Value

0.999837

1-sigma variation

Unit

Aphelion distance

Value

1.747399

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001688

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.736864

1-sigma variation

Unit

MOID

Value

0.001463

1-sigma variation

Unit

Orbit Period

Value

588.0272

1-sigma variation

Unit

U parameter

Value

6.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.39939E-8	7.42594E-9	5.81783E-8	1.63890E-8	6.24426E-8	-6.87349E-7
e	7.42594E-9	3.94063E-9	3.08730E-8	8.69862E-9	3.31309E-8	-3.64745E-7
i	5.81783E-8	3.08730E-8	2.41921E-7	6.83402E-8	2.59095E-7	-2.85744E-6
Ω	1.63890E-8	8.69862E-9	6.83402E-8	2.02051E-8	7.05594E-8	-8.04182E-7
ω	6.24426E-8	3.31309E-8	2.59095E-7	7.05594E-8	2.85593E-7	-3.06934E-6
M	-6.87349E-7	-3.64745E-7	-2.85744E-6	-8.04182E-7	-3.06934E-6	3.37619E-5

Date of computation: 2026-05-05 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

30.116

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

2.5 - 6*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.80512

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-04-16.438263

Unit

Source

[2]

Last Observation

Value

2026-04-20.59992

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

35 (2)

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 2026HU 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	1964-04-25 19:19	> 1 w	0.0265185	0.0018801	0.0257108
EARTH	1978-02-28 12:37	> 1 d	0.0662041	0.0271886	0.0245231
EARTH	1995-05-13 11:19	1289.7	0.1279319	0.0959870	0.0106635
EARTH	2009-02-28 08:21	> 1 d	0.0671124	0.0337677	0.0125775
EARTH	2026-04-14 21:11	< 1 min	0.0019019	0.0019006	0.0000004
EARTH	2055-03-05 20:27	> 1 d	0.0708182	0.0234917	0.0176745
EARTH	2063-05-08 11:57	1067.3	0.0575707	0.0452079	0.0041411
EARTH	2092-04-23 15:51	> 1 w	0.0138819	0.0020311	0.0287926
EARTH	2105-04-06 16:49	> 1 mo	0.0051859	0.0006995	0.3317237
EARTH	2113-05-07 00:51	> 1 mo	0.0485125	0.0109359	30.0042824

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
8.11400378	97.27917681	0.00146281	MINIMUM
181.84110488	269.45899385	0.74700182	SADDLE
3.34964449	270.98996664	2.00007932	SADDLE
181.95596800	89.54568036	2.74698950	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2026HU

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2074-04-11.371	78673.371	3.408	2.04 ± 0.002	4.05E5	1.23E-8	8.80E-4	-10.51
2092-04-10.787	85247.787	2.275	2.90 ± 0.000	1.81E5	1.12E-7	8.77E-4	-9.69
2104-04-11.953	89630.953	3.247	1.06 ± 0.127	4.44E7	2.50E-10	8.78E-4	-12.42
2106-04-12.941	90361.941	4.970	2.40 ± 0.001	7.32E3	8.55E-10	8.79E-4	-11.89
2109-04-11.929	91456.929	3.687	1.94 ± 0.001	4.21E4	4.62E-8	8.79E-4	-10.18
2110-04-12.307	91822.307	3.370	2.52 ± 0.001	9.83E5	4.08E-9	8.78E-4	-11.24
2110-04-12.346	91822.346	3.378	2.64 ± 0.000	1.86E5	1.88E-8	8.77E-4	-10.57
2110-04-12.411	91822.411	3.378	2.23 ± 0.002	2.78E5	1.80E-8	8.77E-4	-10.59
2119-04-12.320	95109.320	-3.345	2.66 ± 0.000	9.97E5	3.66E-9	8.74E-4	-11.33
2125-04-11.544	97300.544	3.627	2.79 ± 0.000	5.55E5	1.66E-9	8.79E-4	-11.70


Based on 35 optical observations (of which 2 are rejected as outliers) from 2026/04/16.438 to 2026/04/20.600.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 2.91 and 2.91 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260505 131004.365 UTC.

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