Asteroids

2026UH2 help

Last update: 2026-10-30 13:15 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.764

Aphelion (Q)

2.945

Eccentricity (e)

0.588

Inclination (i)

3.1

deg

Orbit period (P)

922.2

Earth MOID

0.00051

U parameter

8.5

Next Earth close approach

Date

2059-05-27

Nominal distance (from Earth center)

0.07431

11117084

Maximum Brightness

22.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

26 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-28

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

61400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.854149

1-sigma variation

0.005881

Unit

Eccentricity (e)

Value

0.588198

1-sigma variation

0.001527

Unit

Inclination (i)

Value

3.0670

1-sigma variation

0.0065

Unit

Long. of Ascending Node (Ω)

Value

27.9725

1-sigma variation

0.0027

Unit

Arg. of Perihelion (ω)

Value

292.3577

1-sigma variation

0.0108

Unit

Mean Anomaly (M)

Value

41.99894

1-sigma variation

0.21422

Unit

Perihelion distance

Value

0.763542

1-sigma variation

Unit

Aphelion distance

Value

2.944755

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.004439

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.560584

1-sigma variation

Unit

MOID

Value

0.000513

1-sigma variation

Unit

Orbit Period

Value

922.1790

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.45891E-5	8.97719E-6	3.81576E-5	-1.36415E-5	-2.91577E-5	-1.25987E-3
e	8.97719E-6	2.33118E-6	9.92268E-6	-3.49727E-6	-7.90892E-6	-3.26957E-4
i	3.81576E-5	9.92268E-6	4.24444E-5	-1.42826E-5	-3.75228E-5	-1.38943E-3
Ω	-1.36415E-5	-3.49727E-6	-1.42826E-5	7.07228E-6	-4.44616E-7	4.97817E-4
ω	-2.91577E-5	-7.90892E-6	-3.75228E-5	-4.44616E-7	1.17606E-4	1.05457E-3
M	-1.25987E-3	-3.26957E-4	-1.38943E-3	4.97817E-4	1.05457E-3	4.58900E-2

Date of computation: 2026-10-30 13:15 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

25.013

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

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

[-]

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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

0.6

Unit

Source

[1]

Normalized RMS of residuals

Value

0.788104

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-28.346488

Unit

Source

[2]

Last Observation

Value

2026-10-30.20443

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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2026UH2 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	1963-10-16 21:32	> 1 mo	0.0533266	0.0007318	0.7455071
MARS	1966-06-23 03:08	> 1 mo	0.0422734	0.0360937	0.3066842
MARS	1993-08-12 04:14	> 1 w	0.0390425	0.0163266	0.1636722
EARTH	2006-05-25 07:46	> 1 mo	0.0877794	0.0355320	0.4921120
EARTH	2011-06-20 01:03	> 1 mo	0.1558352	0.0340898	0.3245144
EARTH	2021-09-20 05:38	> 1 mo	0.1927967	0.0191519	0.0861515
VENUS	2026-09-07 05:41	241.9	0.0360337	0.0343609	0.0005582
EARTH	2026-10-24 01:25	< 1 min	0.0233920	0.0232430	0.0000497
EARTH	2059-05-27 10:56	> 1 mo	0.0743131	0.0367774	0.6081995
EARTH	2064-07-02 05:54	> 1 mo	0.1949953	0.0370245	0.3104639
VENUS	2074-08-30 22:48	> 1 mo	0.0389503	0.0214025	0.0697944
EARTH	2074-10-14 22:28	> 1 w	0.0830218	0.0035413	0.1669861
EARTH	2079-11-02 02:03	> 1 w	0.1547657	0.0019913	0.1377450
EARTH	2117-05-23 07:19	> 1 w	0.1557905	0.0375118	0.1926276
EARTH	2122-06-10 20:55	> 1 w	0.0950885	0.0374602	0.1767785

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
37.98984447	286.36400542	0.00051331	MINIMUM
320.32501314	146.19711134	0.03625450	MINIMUM
358.72954760	215.60271343	0.25214059	SADDLE
359.00566336	36.13654110	1.74941519	SADDLE
179.70823613	37.06603255	1.96008893	SADDLE
179.76141860	217.08833856	3.95553592	MAXIMUM

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MOID Plots

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