Asteroids

2026JU1 help

Last update: 2026-05-13 13:46 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.583

Aphelion (Q)

2.659

Eccentricity (e)

0.640

Inclination (i)

5.0

deg

Orbit period (P)

753.7

Earth MOID

0.00130

U parameter

7.5

Next Earth close approach

Date

2050-11-04

Nominal distance (from Earth center)

0.01561

2335958

Maximum Brightness

22.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.7

mag

Diameter

5 - 11*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-05-10

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

1.620791

1-sigma variation

0.000861

Unit

Eccentricity (e)

Value

0.640488

1-sigma variation

0.000252

Unit

Inclination (i)

Value

5.0223

1-sigma variation

0.0021

Unit

Long. of Ascending Node (Ω)

Value

227.4177

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

266.1557

1-sigma variation

0.0007

Unit

Mean Anomaly (M)

Value

38.89242

1-sigma variation

0.03591

Unit

Perihelion distance

Value

0.582694

1-sigma variation

Unit

Aphelion distance

Value

2.658888

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.009792

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.074753

1-sigma variation

Unit

MOID

Value

0.001300

1-sigma variation

Unit

Orbit Period

Value

753.6833

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.41441E-7	2.16625E-7	1.80423E-6	4.41203E-9	4.77620E-7	-3.09177E-5
e	2.16625E-7	6.32946E-8	5.27351E-7	1.50443E-9	1.38772E-7	-9.03321E-6
i	1.80423E-6	5.27351E-7	4.40734E-6	2.67842E-8	1.11463E-6	-7.52394E-5
Ω	4.41203E-9	1.50443E-9	2.67842E-8	1.64481E-8	-4.54794E-8	-1.88041E-7
ω	4.77620E-7	1.38772E-7	1.11463E-6	-4.54794E-8	4.74103E-7	-1.99036E-5
M	-3.09177E-5	-9.03321E-6	-7.52394E-5	-1.88041E-7	-1.99036E-5	1.28925E-3

Date of computation: 2026-05-13 13:46 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

28.699

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

5 - 11*

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

0.695131

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-05-10.236516

Unit

Source

[2]

Last Observation

Value

2026-05-13.17641

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

29 (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

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 2026JU1 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	1953-05-05 22:36	> 1 d	0.0429105	0.0017126	0.0603662
EARTH	1955-05-15 13:37	> 1 d	0.1246933	0.0011313	0.0619720
VENUS	1979-07-04 13:20	> 1 d	0.0402090	0.0227814	0.0198177
EARTH	2007-10-27 03:13	> 1 d	0.1181765	0.0145153	0.0679819
EARTH	2009-11-05 04:40	> 1 d	0.0601009	0.0141608	0.0704322
VENUS	2013-12-20 03:21	> 1 d	0.0368542	0.0235161	0.0506630
EARTH	2024-04-26 11:17	1225.7	0.1764742	0.1466673	0.0099365
EARTH	2026-05-09 08:28	< 1 min	0.0017767	0.0017745	0.0000007
VENUS	2044-09-20 03:28	> 1 d	0.0352037	0.0256295	0.0714168
EARTH	2050-11-04 06:37	> 1 d	0.0156149	0.0094896	0.0877675
EARTH	2059-05-19 15:00	> 1 d	0.1917541	0.0045955	0.1304203
EARTH	2081-11-08 05:37	> 1 mo	0.0773869	0.0082276	0.5146650
EARTH	2088-05-01 11:50	> 1 w	0.1189644	0.0051014	0.3801959
VENUS	2096-05-26 02:44	> 1 w	0.0297763	0.0281666	0.0458328
EARTH	2112-11-16 19:49	> 1 w	0.1749358	0.0108142	0.1030800
EARTH	2119-05-07 23:41	> 1 d	0.0533371	0.0055906	0.0816404

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
53.89717900	123.09049623	0.00129975	MINIMUM
307.33930130	296.86886325	0.01078968	MINIMUM
1.04139073	30.55847595	0.40841438	SADDLE
1.02683294	210.50459856	1.59588025	SADDLE
180.23516583	209.44046578	1.65046505	SADDLE
180.19949811	29.41844081	3.64174369	MAXIMUM

Download:

MOID Plots

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