Asteroids

2025JU help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.796

Aphelion (Q)

2.736

Eccentricity (e)

0.549

Inclination (i)

10.0

deg

Orbit period (P)

857.1

Earth MOID

0.00399

U parameter

3.5

Next Earth close approach

Date

2046-09-15

Nominal distance (from Earth center)

0.13825

20681987

Maximum Brightness

23.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.3

mag

Diameter

60 - 130*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-05-02

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

1.765914

1-sigma variation

0.000003

Unit

Eccentricity (e)

Value

0.549208

1-sigma variation

0.000001

Unit

Inclination (i)

Value

10.0099

1-sigma variation

2.538E-5

Unit

Long. of Ascending Node (Ω)

Value

189.5744

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

113.4873

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

144.98470

1-sigma variation

0.00033

Unit

Perihelion distance

Value

0.796060

1-sigma variation

Unit

Aphelion distance

Value

2.735767

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.580076

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.010611

1-sigma variation

Unit

MOID

Value

0.003989

1-sigma variation

Unit

Orbit Period

Value

857.1416

1-sigma variation

Unit

U parameter

Value

3.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.50269E-12	2.30489E-12	5.21968E-11	1.31706E-10	-9.21086E-11	-9.04016E-10
e	2.30489E-12	7.09535E-13	1.61131E-11	4.08112E-11	-2.83182E-11	-2.77754E-10
i	5.21968E-11	1.61131E-11	6.43917E-10	2.20169E-9	-1.91800E-9	-6.26608E-9
Ω	1.31706E-10	4.08112E-11	2.20169E-9	9.05575E-9	-8.35986E-9	-1.57613E-8
ω	-9.21086E-11	-2.83182E-11	-1.91800E-9	-8.35986E-9	7.98614E-9	1.09693E-8
M	-9.04016E-10	-2.77754E-10	-6.26608E-9	-1.57613E-8	1.09693E-8	1.08935E-7

Date of computation: 2026-03-17 23:26 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

23.278

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

60 - 130*

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

144

Unit

Source

[1]

Unobserved

Value

208

Unit

Source

[1]

Normalized RMS of residuals

Value

0.57034

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-05-02.402653

Unit

Source

[2]

Last Observation

Value

2025-09-23.387469

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (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 2025JU 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	1957-05-04 10:54	22.7	0.1834078	0.1826807	0.0002427
EARTH	1964-05-19 01:52	16.8	0.1461432	0.1459262	0.0000725
EARTH	1985-09-23 15:34	60.7	0.0858414	0.0847294	0.0003707
EARTH	1992-10-09 06:24	34.7	0.1205674	0.1192900	0.0004258
EARTH	2025-05-10 11:31	< 1 min	0.1333054	0.1333049	0.0000002
EARTH	2046-09-15 23:13	67.8	0.1382505	0.1374515	0.0002663
EARTH	2053-10-07 05:36	33.9	0.0791225	0.0779875	0.0003783
EARTH	2086-05-20 04:50	36.4	0.1480230	0.1476170	0.0001359
EARTH	2100-09-03 14:46	188.7	0.1920877	0.1909092	0.0003929
EARTH	2107-10-06 07:42	77.8	0.0346126	0.0323147	0.0007661
MARS	2112-01-05 07:27	25.6	0.0477578	0.0474762	0.0000948

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
38.17488881	268.10082639	0.00404185	MINIMUM
318.45515432	130.30797260	0.12518272	MINIMUM
355.95231405	194.78300584	0.26661017	SADDLE
179.26866040	21.51050155	1.77006030	SADDLE
358.84247657	20.30351800	1.77449961	SADDLE
180.05417969	201.93170810	3.74256507	MAXIMUM

Download:

MOID Plots

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