Asteroids

2026MF4 help

Last update: 2026-07-18 13:00 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.907

Aphelion (Q)

1.456

Eccentricity (e)

0.232

Inclination (i)

1.3

deg

Orbit period (P)

469.1

Earth MOID

0.00469

U parameter

7.1

Next Earth close approach

Date

2035-03-13

Nominal distance (from Earth center)

0.06674

9983683

Maximum Brightness

24.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.7

mag

Diameter

30 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-06-27

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.181532

1-sigma variation

0.000215

Unit

Eccentricity (e)

Value

0.232343

1-sigma variation

0.000208

Unit

Inclination (i)

Value

1.2798

1-sigma variation

0.0010

Unit

Long. of Ascending Node (Ω)

Value

263.5703

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

307.4810

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

29.30410

1-sigma variation

0.01423

Unit

Perihelion distance

Value

0.907011

1-sigma variation

Unit

Aphelion distance

Value

1.456052

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.036045

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.316556

1-sigma variation

Unit

MOID

Value

0.004694

1-sigma variation

Unit

Orbit Period

Value

469.1011

1-sigma variation

Unit

U parameter

Value

7.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.63859E-8	4.48009E-8	2.11304E-7	6.45007E-8	1.14051E-7	-3.06495E-6
e	4.48009E-8	4.32709E-8	2.04086E-7	6.21990E-8	1.10020E-7	-2.96011E-6
i	2.11304E-7	2.04086E-7	9.62605E-7	2.94114E-7	5.18635E-7	-1.39616E-5
Ω	6.45007E-8	6.21990E-8	2.94114E-7	1.10038E-7	1.63494E-7	-4.27397E-6
ω	1.14051E-7	1.10020E-7	5.18635E-7	1.63494E-7	3.10098E-7	-7.55241E-6
M	-3.06495E-6	-2.96011E-6	-1.39616E-5	-4.27397E-6	-7.55241E-6	2.02530E-4

Date of computation: 2026-07-18 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

24.72

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

30 - 70*

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

[-]

Download this part as:

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

0.671144

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-06-27.440693

Unit

Source

[2]

Last Observation

Value

2026-07-14.24322

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

59 (1)

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 2026MF4 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	1954-06-21 21:19	> 1 d	0.0214354	0.0048762	0.0057374
EARTH	1963-07-04 14:28	862.2	0.0888645	0.0637515	0.0083733
EARTH	1976-02-09 07:42	136.1	0.1941337	0.1917113	0.0008075
EARTH	1985-02-19 12:23	530.9	0.0360740	0.0258801	0.0038398
EARTH	1994-02-21 06:33	320.3	0.0256938	0.0236451	0.0007405
EARTH	2003-02-10 11:29	581.1	0.1727186	0.1488922	0.0079505
MARS	2003-12-20 00:44	1323.6	0.0343339	0.0292591	0.0025684
EARTH	2017-07-04 15:43	> 1 d	0.0722053	0.0272927	0.0150372
EARTH	2026-06-23 00:10	< 1 min	0.0256479	0.0255809	0.0000223
EARTH	2035-03-13 12:29	> 1 d	0.0667368	0.0367544	0.0105286
EARTH	2044-02-11 02:18	1203.7	0.1589456	0.1034883	0.0185708
EARTH	2058-06-24 20:57	> 1 d	0.0167418	0.0048784	0.0107508
EARTH	2067-02-10 08:07	> 1 w	0.1493521	0.0205730	0.1571309
EARTH	2072-07-03 16:51	> 1 w	0.0632959	0.0053995	0.2214577
EARTH	2081-02-20 21:29	> 1 d	0.0214483	0.0190844	0.0020410
EARTH	2086-07-11 21:34	> 1 w	0.1724982	0.0076208	0.1591139
EARTH	2095-02-21 12:24	> 1 mo	0.0215171	0.0202414	0.1296417
EARTH	2100-07-08 16:22	> 1 mo	0.1019051	0.0076973	2.2724041
MARS	2107-05-23 10:38	> 1 mo	0.0282596	0.0281686	0.1632836
EARTH	2109-02-10 07:25	> 1 mo	0.1737855	0.0204836	4.3210311
EARTH	2114-06-21 20:17	> 1 mo	0.0405689	0.0083992	4.7257685

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
52.93888644	170.98811963	0.00469375	MINIMUM
314.23719863	49.64174861	0.02095068	MINIMUM
3.56270879	110.17557438	0.09967763	SADDLE
182.45154382	289.20724669	0.46161723	SADDLE
4.06556184	290.82823960	1.90163474	SADDLE
182.63084762	109.35508735	2.46116552	MAXIMUM

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MOID Plots

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