Asteroids

2026MD1 help

Last update: 2026-07-02 12:46 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.960

Aphelion (Q)

3.913

Eccentricity (e)

0.606

Inclination (i)

0.1

deg

Orbit period (P)

1389.0

Earth MOID

0.00120

U parameter

7.7

Next Earth close approach

Date

2103-08-26

Nominal distance (from Earth center)

0.07832

11716116

Maximum Brightness

20.4

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

23.9

mag

Diameter

40 - 100*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-06-20

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.436379

1-sigma variation

0.002880

Unit

Eccentricity (e)

Value

0.606176

1-sigma variation

0.000479

Unit

Inclination (i)

Value

0.1342

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

181.5918

1-sigma variation

0.0202

Unit

Arg. of Perihelion (ω)

Value

119.6325

1-sigma variation

0.0196

Unit

Mean Anomaly (M)

Value

350.06676

1-sigma variation

0.01841

Unit

Perihelion distance

Value

0.959504

1-sigma variation

Unit

Aphelion distance

Value

3.913254

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.175779

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.190851

1-sigma variation

Unit

MOID

Value

0.001199

1-sigma variation

Unit

Orbit Period

Value

1389.0428

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.29226E-6	1.38030E-6	2.58657E-7	2.85460E-5	-2.60275E-5	5.30042E-5
e	1.38030E-6	2.29759E-7	4.30571E-8	4.75817E-6	-4.33862E-6	8.82280E-6
i	2.58657E-7	4.30571E-8	8.08162E-9	9.46525E-7	-8.66595E-7	1.65308E-6
Ω	2.85460E-5	4.75817E-6	9.46525E-7	4.08549E-4	-3.95685E-4	1.81679E-4
ω	-2.60275E-5	-4.33862E-6	-8.66595E-7	-3.95685E-4	3.83799E-4	-1.65620E-4
M	5.30042E-5	8.82280E-6	1.65308E-6	1.81679E-4	-1.65620E-4	3.38811E-4

Date of computation: 2026-07-02 12:46 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

23.937

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

40 - 100*

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

0.557649

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-06-20.242236

Unit

Source

[2]

Last Observation

Value

2026-06-23.814912

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

28 (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 2026MD1 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	1953-07-08 14:16	> 1 mo	0.0106974	0.0016205	0.1079183
MARS	2000-02-01 23:50	> 1 w	0.0479392	0.0206752	0.1874479
EARTH	2007-05-31 23:23	> 1 w	0.1887087	0.0023731	0.1994843
EARTH	2026-06-25 06:04	< 1 min	0.0150578	0.0150269	0.0000103
EARTH	2103-08-26 09:47	> 1 mo	0.0783174	0.0012758	0.2281153

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
15.23343650	227.74797541	0.00119881	MINIMUM
344.06170518	165.00152141	0.00232664	MINIMUM
359.62364346	196.34189782	0.05667388	SADDLE
359.63784088	16.36193629	1.94369283	SADDLE
179.90936146	16.70339267	2.92905210	SADDLE
179.90653196	196.69976699	4.92937926	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2026MD1

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2094-08-23.827	86112.827	-0.770	1.11 ± 0.375	2.04E7	3.34E-8	7.91E0	-7.07	0
2103-08-06.894	89381.894	2.557	1.64 ± 0.084	3.16E6	3.61E-9	6.79E0	-8.15	0
2114-08-31.664	93424.664	-1.762	0.05 ± 4.049	3.97E8	1.33E-10	8.55E0	-9.56	0
2126-08-20.613	97796.613	0.805	0.63 ± 0.363	1.09E7	7.27E-8	7.50E0	-6.92	n/a


Based on 19 optical observations (of which 0 are rejected as outliers) from 2026/06/20.242 to 2026/06/20.942.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.68 and 1.68 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260620 231936.897 UTC.

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