Asteroids

533541 2014JU54 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.052

Aphelion (Q)

1.822

Eccentricity (e)

0.268

Inclination (i)

26.8

deg

Orbit period (P)

629.2

Earth MOID

0.07213

U parameter

1.5

Next Earth close approach

Date

2049-12-21

Nominal distance (from Earth center)

0.07246

10840308

Maximum Brightness

14.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

260 - 600*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2014-05-07

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.437020

1-sigma variation

7.574E-8

Unit

Eccentricity (e)

Value

0.267603

1-sigma variation

6.836E-8

Unit

Inclination (i)

Value

26.7751

1-sigma variation

2.047E-5

Unit

Long. of Ascending Node (Ω)

Value

88.3154

1-sigma variation

6.102E-6

Unit

Arg. of Perihelion (ω)

Value

10.6757

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

1.70529

1-sigma variation

0.00007

Unit

Perihelion distance

Value

1.052469

1-sigma variation

Unit

Aphelion distance

Value

1.821571

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.072361

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.792405

1-sigma variation

Unit

MOID

Value

0.072129

1-sigma variation

Unit

Orbit Period

Value

629.2056

1-sigma variation

Unit

U parameter

Value

1.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.73587E-15	-2.50904E-15	1.04192E-12	5.20036E-14	-6.44114E-12	-5.10539E-12
e	-2.50904E-15	4.67281E-15	-5.58217E-13	-2.31285E-13	2.65557E-12	2.40473E-12
i	1.04192E-12	-5.58217E-13	4.19098E-10	-2.05897E-12	-1.14687E-9	-9.32751E-10
Ω	5.20036E-14	-2.31285E-13	-2.05897E-12	3.72307E-11	-6.52392E-11	-5.88860E-11
ω	-6.44114E-12	2.65557E-12	-1.14687E-9	-6.52392E-11	7.43525E-9	5.62361E-9
M	-5.10539E-12	2.40473E-12	-9.32751E-10	-5.88860E-11	5.62361E-9	4.61245E-9

Date of computation: 2025-09-10 00:30 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

20.034

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

260 - 600*

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

1723

Unit

Source

[1]

Unobserved

Value

2467

Unit

Source

[1]

Normalized RMS of residuals

Value

0.405227

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2014-05-07.38214

Unit

Source

[2]

Last Observation

Value

2019-01-24.78863

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

114 (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

Close Approaches for 533541 2014JU54 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1968-12-24 09:26	< 1 min	0.1467442	0.1466925	0.0000172
EARTH	1987-12-16 13:36	< 1 min	0.1661585	0.1661187	0.0000133
EARTH	2018-12-19 15:19	< 1 s	0.0864815	0.0864812	0.0000001
EARTH	2049-12-21 04:23	< 1 min	0.0724630	0.0724590	0.0000013
EARTH	2080-12-22 23:43	2.4	0.1006531	0.1005418	0.0000371
EARTH	2111-12-28 05:20	3.0	0.1966823	0.1964680	0.0000714

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
352.39687498	346.89074269	0.07205219	MINIMUM
204.63192426	193.02124805	0.82729527	SADDLE
6.83244723	183.70769936	2.06553552	SADDLE
177.58660087	353.93314703	2.80330821	MAXIMUM

Download:

MOID Plots

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