Asteroids

2026ET help

Last update: 2026-03-31 13:01 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.664

Aphelion (Q)

2.506

Eccentricity (e)

0.581

Inclination (i)

26.4

deg

Orbit period (P)

729.0

Earth MOID

0.01070

U parameter

7.8

Next Earth close approach

Date

2028-03-10

Nominal distance (from Earth center)

0.02348

3512489

Maximum Brightness

19.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

40 - 90*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-03-06

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.585235

1-sigma variation

0.001348

Unit

Eccentricity (e)

Value

0.581024

1-sigma variation

0.000405

Unit

Inclination (i)

Value

26.3809

1-sigma variation

0.0143

Unit

Long. of Ascending Node (Ω)

Value

351.9588

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

262.5534

1-sigma variation

0.0108

Unit

Mean Anomaly (M)

Value

19.63045

1-sigma variation

0.01653

Unit

Perihelion distance

Value

0.664175

1-sigma variation

Unit

Aphelion distance

Value

2.506295

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.129239

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.016995

1-sigma variation

Unit

MOID

Value

0.010702

1-sigma variation

Unit

Orbit Period

Value

729.0191

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.81612E-6	5.46013E-7	1.93222E-5	-3.56998E-7	-1.45437E-5	-2.22806E-5
e	5.46013E-7	1.64160E-7	5.80923E-6	-1.07302E-7	-4.37222E-6	-6.69866E-6
i	1.93222E-5	5.80923E-6	2.05580E-4	-3.79863E-6	-1.54729E-4	-2.37050E-4
Ω	-3.56998E-7	-1.07302E-7	-3.79863E-6	7.09011E-8	2.86387E-6	4.37939E-6
ω	-1.45437E-5	-4.37222E-6	-1.54729E-4	2.86387E-6	1.16529E-4	1.78423E-4
M	-2.22806E-5	-6.69866E-6	-2.37050E-4	4.37939E-6	1.78423E-4	2.73345E-4

Date of computation: 2026-03-31 13:01 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

23.996

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 - 90*

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

0.597973

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-03-06.39348

Unit

Source

[2]

Last Observation

Value

2026-03-10.87195

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

74 (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

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 2026ET 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	1978-09-14 09:27	> 1 w	0.1607245	0.0713482	0.2004198
EARTH	1980-09-11 08:00	> 1 w	0.1109047	0.0732480	0.1550218
EARTH	1982-09-09 12:07	> 1 w	0.0780819	0.0737490	0.0609936
EARTH	1984-09-06 20:29	> 1 w	0.0785929	0.0734757	0.0620040
EARTH	1986-09-05 03:55	> 1 d	0.1101422	0.0729047	0.1307269
EARTH	1988-09-02 06:26	> 1 d	0.1610839	0.0706336	0.1554453
EARTH	2020-03-20 02:48	> 1 d	0.1628300	0.0414747	0.0414221
EARTH	2022-03-17 07:57	> 1 d	0.1041042	0.0203619	0.0292429
EARTH	2024-03-13 22:29	1183.6	0.0514934	0.0127082	0.0155321
EARTH	2026-03-12 06:00	< 1 min	0.0127666	0.0127443	0.0000075
EARTH	2028-03-10 09:02	1134.9	0.0234795	0.0110087	0.0140983
EARTH	2030-03-08 16:20	> 1 d	0.0660586	0.0120568	0.0230025
EARTH	2032-03-05 19:15	> 1 d	0.1152676	0.0333108	0.0278076
EARTH	2034-03-03 15:59	> 1 d	0.1713342	0.0780543	0.0312517

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
310.53684734	65.69870818	0.01070152	MINIMUM
54.45530201	241.65643858	0.07262206	MINIMUM
3.20123869	155.50796724	0.51288926	SADDLE
1.81321475	332.44755313	1.60829104	SADDLE
181.46782203	330.30502388	1.67886169	SADDLE
179.60276765	149.25019673	3.44611743	MAXIMUM

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MOID Plots

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