Asteroids

2026SH help

Last update: 2026-09-19 13:15 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.992

Aphelion (Q)

1.164

Eccentricity (e)

0.080

Inclination (i)

25.6

deg

Orbit period (P)

409.0

Earth MOID

0.02682

U parameter

8.3

Next Earth close approach

Date

2026-09-20

Nominal distance (from Earth center)

0.02619

3918395

Maximum Brightness

18.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.5

mag

Diameter

21 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-09-18

Observatory

University of Arizona Catalina Sky 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

1.078239

1-sigma variation

0.001020

Unit

Eccentricity (e)

Value

0.079990

1-sigma variation

0.000613

Unit

Inclination (i)

Value

25.5818

1-sigma variation

0.0787

Unit

Long. of Ascending Node (Ω)

Value

176.5667

1-sigma variation

0.0007

Unit

Arg. of Perihelion (ω)

Value

240.2321

1-sigma variation

0.4316

Unit

Mean Anomaly (M)

Value

32.79349

1-sigma variation

0.32705

Unit

Perihelion distance

Value

0.991991

1-sigma variation

Unit

Aphelion distance

Value

1.164488

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.121214

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.027037

1-sigma variation

Unit

MOID

Value

0.026823

1-sigma variation

Unit

Orbit Period

Value

408.9509

1-sigma variation

Unit

U parameter

Value

8.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.03977E-6	5.96451E-7	7.99087E-5	-6.79001E-7	-4.31560E-4	3.27796E-4
e	5.96451E-7	3.75208E-7	4.46036E-5	-4.23075E-7	-2.32183E-4	1.77098E-4
i	7.99087E-5	4.46036E-5	6.18839E-3	-5.09401E-5	-3.37396E-2	2.55995E-2
Ω	-6.79001E-7	-4.23075E-7	-5.09401E-5	4.77900E-7	2.66202E-4	-2.02948E-4
ω	-4.31560E-4	-2.32183E-4	-3.37396E-2	2.66202E-4	1.86271E-1	-1.41140E-1
M	3.27796E-4	1.77098E-4	2.55995E-2	-2.02948E-4	-1.41140E-1	1.06959E-1

Date of computation: 2026-09-19 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

25.511

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

21 - 50*

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

0.6

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.33567

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-18.231053

Unit

Source

[2]

Last Observation

Value

2026-09-18.867593

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (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 2026SH 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	1951-09-20 01:02	> 1 d	0.0272900	0.0253937	0.0332778
EARTH	1952-03-13 03:15	> 1 d	0.1518807	0.1270904	0.0441164
EARTH	1961-03-18 16:21	847.9	0.1783824	0.1468036	0.0150389
EARTH	1979-09-18 22:35	> 1 d	0.0594716	0.0253841	0.2097307
EARTH	1980-03-13 23:08	> 1 d	0.1298867	0.1200781	0.0838407
EARTH	1998-09-22 13:54	> 1 d	0.1024031	0.0258475	0.2162018
EARTH	2007-09-15 19:44	> 1 d	0.1674690	0.0245800	0.1565224
EARTH	2008-03-16 03:35	> 1 d	0.1278629	0.1195956	0.0516116
EARTH	2026-09-20 08:32	1.8	0.0261929	0.0259400	0.0000843
EARTH	2027-03-13 21:21	169.7	0.1583142	0.1489379	0.0031388
EARTH	2036-03-18 07:38	> 1 d	0.1712507	0.1310489	0.0493528
EARTH	2054-09-19 02:51	> 1 d	0.0517339	0.0256875	0.1858688
EARTH	2055-03-14 19:55	> 1 d	0.1313864	0.1201249	0.0798536
EARTH	2073-09-22 09:21	> 1 d	0.0971248	0.0260264	0.1257014
EARTH	2082-09-15 10:52	> 1 d	0.1777787	0.0321455	0.0513724
EARTH	2083-03-17 09:41	> 1 d	0.1322771	0.1168131	0.0189191
EARTH	2101-09-20 19:04	> 1 d	0.0298526	0.0258265	0.0589513
EARTH	2102-03-15 07:26	> 1 d	0.1429116	0.1170993	0.0697666
EARTH	2120-09-22 18:47	> 1 w	0.0786157	0.0261536	0.5510860

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
304.09259151	254.85610736	0.02682265	MINIMUM
113.36298410	70.80307341	0.11986865	MINIMUM
28.64150087	345.14257235	0.43998978	SADDLE
209.33990550	160.43074600	0.49817020	SADDLE
13.19228282	147.08980287	1.96062250	SADDLE
143.25673794	276.69705537	2.13464952	MAXIMUM

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MOID Plots

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