Asteroids

2026UL help

Last update: 2026-10-30 12:15 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Aten

Perihelion (q)

0.603

Aphelion (Q)

1.111

Eccentricity (e)

0.296

Inclination (i)

20.6

deg

Orbit period (P)

289.8

Earth MOID

0.00454

U parameter

4.9

Next Earth close approach

Date

2030-10-25

Nominal distance (from Earth center)

0.18284

27352079

Maximum Brightness

23.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.6

mag

Diameter

30 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-17

Observatory

ATLAS Chile, Rio Hurtado

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

61400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.856995

1-sigma variation

0.000003

Unit

Eccentricity (e)

Value

0.295905

1-sigma variation

0.000046

Unit

Inclination (i)

Value

20.5955

1-sigma variation

0.0051

Unit

Long. of Ascending Node (Ω)

Value

24.7907

1-sigma variation

2.293E-5

Unit

Arg. of Perihelion (ω)

Value

222.2134

1-sigma variation

0.0037

Unit

Mean Anomaly (M)

Value

195.94224

1-sigma variation

0.01081

Unit

Perihelion distance

Value

0.603406

1-sigma variation

Unit

Aphelion distance

Value

1.110584

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.005729

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.360733

1-sigma variation

Unit

MOID

Value

0.004539

1-sigma variation

Unit

Orbit Period

Value

289.7781

1-sigma variation

Unit

U parameter

Value

4.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.05029E-11	1.49343E-10	1.65057E-8	7.36103E-11	1.20445E-8	-3.48454E-8
e	1.49343E-10	2.15766E-9	2.38287E-7	1.06268E-9	1.73394E-7	-5.02186E-7
i	1.65057E-8	2.38287E-7	2.63179E-5	1.17379E-7	1.91523E-5	-5.54667E-5
Ω	7.36103E-11	1.06268E-9	1.17379E-7	5.25640E-10	8.54148E-8	-2.47368E-7
ω	1.20445E-8	1.73394E-7	1.91523E-5	8.54148E-8	1.39454E-5	-4.03790E-5
M	-3.48454E-8	-5.02186E-7	-5.54667E-5	-2.47368E-7	-4.03790E-5	1.16926E-4

Date of computation: 2026-10-30 12:15 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

24.633

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

0.618984

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-17.337695

Unit

Source

[2]

Last Observation

Value

2026-10-23.082789

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

85 (3)

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 2026UL 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	1960-10-17 21:07	1043.6	0.0512619	0.0054896	0.0636253
EARTH	1964-10-19 17:43	> 1 d	0.1143596	0.0163167	0.0547972
EARTH	1983-10-21 06:57	431.8	0.1780227	0.1399087	0.0127095
EARTH	1987-10-18 08:04	1.2	0.0049770	0.0045270	0.0002578
EARTH	1991-10-19 22:00	28.5	0.1023260	0.1004959	0.0006101
EARTH	2022-10-19 13:58	1.7	0.1118138	0.1115073	0.0001022
EARTH	2026-10-18 03:42	< 1 s	0.0047001	0.0046969	0.0000010
EARTH	2030-10-25 01:05	21.6	0.1828374	0.1825211	0.0001054
EARTH	2049-10-18 01:38	7.1	0.0231410	0.0212169	0.0006422
EARTH	2053-10-21 00:12	3.7	0.1339044	0.1336254	0.0000930
EARTH	2076-10-17 23:08	50.1	0.0350639	0.0244271	0.0035561
EARTH	2080-10-19 10:35	71.4	0.1055700	0.1011521	0.0014730
EARTH	2103-10-22 03:43	320.7	0.1607177	0.1327139	0.0093369
EARTH	2107-10-19 14:56	70.5	0.0111292	0.0030937	0.0098057
EARTH	2111-10-20 04:49	1289.7	0.0727118	0.0061906	0.0414924
EARTH	2115-10-24 03:52	> 1 d	0.1601170	0.0298709	0.0806267

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
124.15397221	282.28528360	0.00453903	MINIMUM
292.57344980	60.55208733	0.31010535	MINIMUM
228.99528795	0.46356258	0.35458795	SADDLE
22.57024662	173.03981573	0.47643768	SADDLE
9.32532345	334.20754738	1.57562503	SADDLE
176.13378106	139.90433964	2.10777461	MAXIMUM

Download:

MOID Plots

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