Asteroids

2026MC1 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.335

Aphelion (Q)

1.248

Eccentricity (e)

0.577

Inclination (i)

26.9

deg

Orbit period (P)

257.2

Earth MOID

0.01252

U parameter

8.1

Next Earth close approach

Date

2033-06-21

Nominal distance (from Earth center)

0.17093

25570450

Maximum Brightness

25.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.2

mag

Diameter

25 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-06-20

Observatory

JPL SynTrack Robotic Telescope, Auberry

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

0.791447

1-sigma variation

0.000356

Unit

Eccentricity (e)

Value

0.576802

1-sigma variation

0.001551

Unit

Inclination (i)

Value

26.9161

1-sigma variation

0.1702

Unit

Long. of Ascending Node (Ω)

Value

266.9929

1-sigma variation

0.0042

Unit

Arg. of Perihelion (ω)

Value

211.7209

1-sigma variation

0.0255

Unit

Mean Anomaly (M)

Value

82.58536

1-sigma variation

0.26756

Unit

Perihelion distance

Value

0.334938

1-sigma variation

Unit

Aphelion distance

Value

1.247955

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.020867

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.629950

1-sigma variation

Unit

MOID

Value

0.012523

1-sigma variation

Unit

Orbit Period

Value

257.1763

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.27028E-7	5.52845E-7	6.06551E-5	1.50436E-6	9.08155E-6	-9.53596E-5
e	5.52845E-7	2.40620E-6	2.63994E-4	6.54727E-6	3.95224E-5	-4.15034E-4
i	6.06551E-5	2.63994E-4	2.89639E-2	7.18330E-4	4.33619E-3	-4.55352E-2
Ω	1.50436E-6	6.54727E-6	7.18330E-4	1.78160E-5	1.07549E-4	-1.12933E-3
ω	9.08155E-6	3.95224E-5	4.33619E-3	1.07549E-4	6.49290E-4	-6.81730E-3
M	-9.53596E-5	-4.15034E-4	-4.55352E-2	-1.12933E-3	-6.81730E-3	7.15879E-2

Date of computation: 2026-07-30 14:25 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

25.157

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

25 - 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

0.72687

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-06-20.29303

Unit

Source

[2]

Last Observation

Value

2026-06-28.205874

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (2)

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 2026MC1 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	1950-06-18 01:03	964.4	0.1275556	0.0577374	0.0236534
EARTH	1957-06-17 06:56	1303.8	0.0350885	0.0141045	0.0533456
EARTH	1969-06-19 01:26	> 1 d	0.1604490	0.0298835	0.0599428
EARTH	1976-06-16 20:18	1375.4	0.0189079	0.0135160	0.0541199
EARTH	1988-06-17 21:37	> 1 d	0.1353787	0.0242531	0.0758410
EARTH	1995-06-18 15:48	> 1 d	0.0707647	0.0141864	0.0870881
EARTH	2007-06-17 12:03	773.1	0.0748287	0.0152630	0.0599245
EARTH	2014-06-20 05:28	> 1 d	0.1374826	0.0171928	0.0429879
EARTH	2026-06-17 06:01	< 1 min	0.0263515	0.0259858	0.0001219
EARTH	2033-06-21 02:18	1180.2	0.1709279	0.0949912	0.0253919
EARTH	2038-06-21 11:40	> 1 d	0.1971007	0.1015026	0.0328690
EARTH	2045-06-17 02:19	498.9	0.0246900	0.0122931	0.0561043
EARTH	2052-06-20 10:09	> 1 d	0.1546279	0.0145018	0.0555010
EARTH	2064-06-16 22:28	263.9	0.0659205	0.0136034	0.0275235
EARTH	2071-06-19 19:58	400.7	0.1048521	0.0745459	0.0101277
EARTH	2083-06-18 10:31	667.0	0.1138651	0.0504126	0.0215259
EARTH	2090-06-18 12:15	1174.5	0.0544700	0.0122410	0.0417230
EARTH	2102-06-20 04:59	> 1 d	0.1459091	0.0249025	0.0466374
EARTH	2109-06-18 21:09	1224.2	0.0279167	0.0112439	0.0520200
EARTH	2121-06-19 20:40	126.7	0.1412859	0.1404880	0.0002660

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
120.54058965	161.17785812	0.01252320	MINIMUM
16.59266838	41.09459675	0.67916614	SADDLE
8.78190171	206.53773282	1.34004507	SADDLE
176.86849491	10.05310563	2.21662725	MAXIMUM

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MOID Plots

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