Asteroids

2026QH3 help

Last update: 2026-08-31 13:00 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.824

Aphelion (Q)

1.159

Eccentricity (e)

0.169

Inclination (i)

10.8

deg

Orbit period (P)

360.7

Earth MOID

0.00021

U parameter

5.2

Next Earth close approach

Date

2027-09-02

Nominal distance (from Earth center)

0.10521

15738573

Maximum Brightness

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

27.1

mag

Diameter

10 - 23*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-08-30

Observatory

ATLAS-MLO, Mauna Loa

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

0.991668

1-sigma variation

0.000008

Unit

Eccentricity (e)

Value

0.169203

1-sigma variation

0.000013

Unit

Inclination (i)

Value

10.7678

1-sigma variation

0.0010

Unit

Long. of Ascending Node (Ω)

Value

157.1759

1-sigma variation

2.691E-5

Unit

Arg. of Perihelion (ω)

Value

285.8083

1-sigma variation

0.0025

Unit

Mean Anomaly (M)

Value

190.52450

1-sigma variation

0.00490

Unit

Perihelion distance

Value

0.823875

1-sigma variation

Unit

Aphelion distance

Value

1.159461

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.069071

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.000271

1-sigma variation

Unit

MOID

Value

0.000209

1-sigma variation

Unit

Orbit Period

Value

360.7016

1-sigma variation

Unit

U parameter

Value

5.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.55257E-11	8.00116E-11	6.29725E-9	-1.77049E-10	-2.04447E-8	3.91804E-8
e	8.00116E-11	1.57379E-10	1.21126E-8	-3.36427E-10	-2.36629E-8	5.35006E-8
i	6.29725E-9	1.21126E-8	9.38592E-7	-2.60578E-8	-1.86821E-6	4.18472E-6
Ω	-1.77049E-10	-3.36427E-10	-2.60578E-8	7.24053E-10	5.26155E-8	-1.17264E-7
ω	-2.04447E-8	-2.36629E-8	-1.86821E-6	5.26155E-8	6.40737E-6	-1.21013E-5
M	3.91804E-8	5.35006E-8	4.18472E-6	-1.17264E-7	-1.21013E-5	2.39640E-5

Date of computation: 2026-08-31 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

27.077

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

10 - 23*

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

0.7

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.748681

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-08-30.311642

Unit

Source

[2]

Last Observation

Value

2026-08-30.981225

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

26 (3)

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 2026QH3 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	1954-03-23 13:03	> 1 mo	0.1044180	0.0849483	0.2616765
EARTH	1955-02-04 06:23	> 1 mo	0.1767518	0.1525808	0.1381951
EARTH	1956-08-30 15:31	75.8	0.0022726	0.0004068	0.0024654
EARTH	1957-08-28 07:12	141.7	0.0775016	0.0689799	0.0028406
EARTH	1958-08-25 03:17	142.3	0.1631069	0.1543701	0.0029122
EARTH	2017-03-24 12:40	56.0	0.1927521	0.1906707	0.0006943
EARTH	2018-03-18 14:55	68.9	0.1137461	0.1120886	0.0005542
EARTH	2019-03-11 11:40	86.5	0.0593886	0.0589386	0.0001572
EARTH	2020-02-29 12:58	120.2	0.0814218	0.0804701	0.0003198
EARTH	2021-02-11 14:59	170.6	0.1415399	0.1405953	0.0003156
EARTH	2022-01-18 02:27	226.5	0.1951239	0.1945282	0.0001990
EARTH	2024-08-22 15:09	32.2	0.1570894	0.1566946	0.0001316
EARTH	2025-08-31 10:45	2.5	0.0789916	0.0787709	0.0000736
EARTH	2026-08-30 23:20	< 1 s	0.0024364	0.0024358	0.0000002
EARTH	2027-09-02 02:00	< 1 min	0.1052059	0.1050311	0.0000582
EARTH	2031-02-13 09:56	55.4	0.1357972	0.1351924	0.0002017
EARTH	2032-02-28 19:35	31.3	0.0389750	0.0383566	0.0002073
EARTH	2033-03-06 22:46	23.3	0.0729429	0.0720844	0.0002864
EARTH	2034-03-13 03:18	17.3	0.1748423	0.1738982	0.0003148
EARTH	2083-08-22 19:10	26.2	0.1971473	0.1954024	0.0005816
EARTH	2084-08-26 13:33	29.3	0.0930705	0.0913361	0.0005781
EARTH	2085-08-30 13:55	26.0	0.0061797	0.0045747	0.0005351
EARTH	2086-08-25 18:37	872.7	0.1783407	0.1602398	0.0060423
EARTH	2088-01-25 14:38	> 1 d	0.1806206	0.1450740	0.0122233
EARTH	2089-02-27 18:23	> 1 d	0.0165464	0.0139439	0.0118819
EARTH	2090-03-08 20:48	> 1 d	0.1568235	0.0228975	0.0483301
EARTH	2123-08-25 08:22	> 1 mo	0.1366718	0.0037316	0.8052087
EARTH	2124-08-31 05:48	> 1 mo	0.0185156	0.0021529	0.7956508
EARTH	2125-08-19 07:37	> 1 w	0.1957876	0.0536468	0.2677352
EARTH	2125-10-13 00:46	> 1 mo	0.1970816	0.1247069	0.1749142

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
263.75073486	233.49948974	0.00020900	MINIMUM
75.39921700	62.53690063	0.05497214	MINIMUM
349.94393347	327.36074840	0.23248898	SADDLE
169.23807491	149.18588440	0.24675484	SADDLE
355.75440140	154.25473681	1.83172872	SADDLE
179.63306234	338.23077558	2.13540630	MAXIMUM

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MOID Plots

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Level lines of the squared distance function

2026QH3

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2121-08-31.074	95981.074	-0.307	0.000	1.78 ± 0.150	4.64E4	7.83E-6	7.25E-2	-6.47	0


Based on 26 optical observations (of which 3 are rejected as outliers) from 2026/08/30.312 to 2026/08/30.981.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.86 and 1.86 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260831 131255.511 UTC.

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