Asteroids

2026DM8 help

Last update: 2026-02-28 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.831

Aphelion (Q)

3.690

Eccentricity (e)

0.632

Inclination (i)

0.2

deg

Orbit period (P)

1241.5

Earth MOID

0.00147

U parameter

8.6

Next Earth close approach

Date

2053-07-05

Nominal distance (from Earth center)

0.00112

167505

Maximum Brightness

12.7

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

25.1

mag

Diameter

26 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-02-23

Observatory

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.260600

1-sigma variation

0.008459

Unit

Eccentricity (e)

Value

0.632458

1-sigma variation

0.001474

Unit

Inclination (i)

Value

0.1951

1-sigma variation

0.0004

Unit

Long. of Ascending Node (Ω)

Value

308.2285

1-sigma variation

0.0193

Unit

Arg. of Perihelion (ω)

Value

277.4907

1-sigma variation

0.0165

Unit

Mean Anomaly (M)

Value

317.72320

1-sigma variation

0.24468

Unit

Perihelion distance

Value

0.830866

1-sigma variation

Unit

Aphelion distance

Value

3.690335

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.244974

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.481718

1-sigma variation

Unit

MOID

Value

0.001473

1-sigma variation

Unit

Orbit Period

Value

1241.4640

1-sigma variation

Unit

U parameter

Value

8.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.15599E-5	1.24726E-5	3.60625E-6	1.41590E-4	-1.09972E-4	2.06985E-3
e	1.24726E-5	2.17398E-6	6.28454E-7	2.46629E-5	-1.91407E-5	3.60767E-4
i	3.60625E-6	6.28454E-7	1.85052E-7	7.68552E-6	-6.12054E-6	1.04312E-4
Ω	1.41590E-4	2.46629E-5	7.68552E-6	3.71890E-4	-3.13728E-4	4.09586E-3
ω	-1.09972E-4	-1.91407E-5	-6.12054E-6	-3.13728E-4	2.72685E-4	-3.18159E-3
M	2.06985E-3	3.60767E-4	1.04312E-4	4.09586E-3	-3.18159E-3	5.98699E-2

Date of computation: 2026-02-28 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

25.076

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.502311

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-02-20.769837

Unit

Source

[2]

Last Observation

Value

2026-02-28.33394

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

36 (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

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 2026DM8 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	1955-04-24 09:30	> 1 mo	0.1836701	0.1153832	0.0227644
EARTH	1982-04-03 01:22	> 1 mo	0.1395413	0.0010590	0.4907137
EARTH	2009-05-27 11:46	> 1 mo	0.1699284	0.0012051	0.1692854
EARTH	2026-03-08 05:08	< 1 min	0.0402254	0.0399870	0.0000795
EARTH	2053-07-05 14:49	> 1 mo	0.0011197	0.0010844	0.1759613
EARTH	2060-03-26 18:02	> 1 mo	0.0966616	0.0117540	1332.5882277
EARTH	2091-06-19 14:10	> 1 mo	0.1163098	0.0021449	4618.3930467
EARTH	2122-05-01 02:31	> 1 mo	0.1847963	0.0373741	3407.2688632

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
29.65706136	182.78016204	0.00147290	MINIMUM
332.31471805	68.60100065	0.00229185	MINIMUM
1.19467841	125.95962968	0.17989321	SADDLE
1.17169793	305.93046690	1.82164716	SADDLE
180.26774031	304.76361893	2.69941494	SADDLE
180.27311310	124.77050618	4.70091255	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2026DM8

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2073-07-03.882	78391.882	-2.918	0.000	1.15 ± 0.024	1.16E6	5.50E-9	2.06E0	-8.17
2076-07-06.304	79490.304	-0.002	0.000	0.45 ± 0.012	6.78E6	1.39E-7	2.19E0	-6.77
2076-07-06.305	79490.305	-0.002	0.000	0.94 ± 0.068	8.88E6	8.10E-8	2.19E0	-7.00
2077-07-07.181	79856.181	2.290	1.101	1.26 ± 0.021	3.15E6	3.10E-10	2.19E0	-9.43
2089-07-07.092	84239.092	-1.787	0.000	0.03 ± 0.072	1.02E7	2.00E-8	2.17E0	-7.71
2091-07-09.414	84971.414	-0.924	0.000	0.59 ± 0.018	3.90E7	1.48E-8	2.25E0	-7.84
2091-07-10.372	84972.372	2.240	0.000	0.58 ± 0.021	9.33E5	7.65E-8	2.36E0	-7.12
2092-07-06.920	85334.920	-0.941	0.000	0.95 ± 0.063	2.02E7	2.08E-8	2.19E0	-7.71
2092-07-06.971	85334.971	-0.942	0.000	1.25 ± 0.000	7.74E7	5.04E-9	2.19E0	-8.33
2092-07-07.478	85335.478	-4.684	0.000	1.22 ± 0.023	1.74E5	2.45E-11	2.14E0	-10.65
2093-07-05.333	85698.333	-1.820	0.000	1.22 ± 0.024	4.41E6	3.73E-8	2.11E0	-7.48
2093-07-05.430	85698.430	-1.826	0.000	1.26 ± 0.024	3.78E5	7.00E-8	2.11E0	-7.21
2093-07-05.523	85698.523	-2.277	0.000	1.27 ± 0.026	5.49E4	1.15E-7	2.11E0	-6.99
2093-07-05.525	85698.525	-2.203	0.000	0.33 ± 0.020	2.36E4	3.77E-6	2.11E0	-5.47
2097-07-04.066	87158.066	-0.033	0.000	0.91 ± 0.023	1.16E7	6.25E-8	2.09E0	-7.28
2097-07-04.662	87158.662	0.756	0.000	0.39 ± 0.023	4.58E7	1.61E-8	2.11E0	-7.87
2111-07-07.104	92273.104	-0.385	0.000	0.97 ± 0.021	4.16E6	2.10E-7	2.16E0	-6.82
2111-07-08.214	92274.214	0.022	0.000	0.37 ± 0.000	2.12E8	4.55E-9	2.20E0	-8.48
2114-07-05.228	93367.228	-1.764	0.000	0.85 ± 0.023	2.12E7	8.83E-9	2.06E0	-8.23
2114-07-06.889	93368.889	0.757	0.000	1.18 ± 0.024	1.14E7	2.46E-8	2.15E0	-7.77
2118-07-08.683	94831.683	0.081	0.000	0.32 ± 0.022	1.92E6	5.05E-7	2.21E0	-6.47
2118-07-08.704	94831.704	0.127	0.000	0.21 ± 0.021	1.49E6	6.60E-7	2.22E0	-6.35
2118-07-08.708	94831.708	0.020	0.000	1.08 ± 0.021	2.62E7	3.77E-8	2.22E0	-7.59
2118-07-08.794	94831.794	0.018	0.000	0.49 ± 0.022	2.42E7	3.82E-8	2.22E0	-7.59


Based on 36 optical observations (of which 0 are rejected as outliers) from 2026/02/20.770 to 2026/02/28.334.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.26 and 1.26 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260228 134708.844 UTC.

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