Asteroids

2026JN4 help

Last update: 2026-05-18 06:18 UTC

Orbital Properties

Epoch

61175.4

MJD

Orbit type

Apollo

Perihelion (q)

0.875

Aphelion (Q)

1.815

Eccentricity (e)

0.350

Inclination (i)

11.1

deg

Orbit period (P)

569.7

Earth MOID

0.00002

U parameter

6.6

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

33.2

mag

Diameter

0.6 - 1.3*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-05-15

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

61175.4092

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.344920

1-sigma variation

0.000131

Unit

Eccentricity (e)

Value

0.349678

1-sigma variation

0.000041

Unit

Inclination (i)

Value

11.0899

1-sigma variation

0.0055

Unit

Long. of Ascending Node (Ω)

Value

54.3961

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

241.3229

1-sigma variation

0.0106

Unit

Mean Anomaly (M)

Value

329.25139

1-sigma variation

0.00990

Unit

Perihelion distance

Value

0.874631

1-sigma variation

Unit

Aphelion distance

Value

1.815209

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.427791

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.000032

1-sigma variation

Unit

MOID

Value

0.000019

1-sigma variation

Unit

Orbit Period

Value

569.6962

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.72476E-8	5.41026E-9	-7.16130E-7	-7.44568E-8	-1.39624E-6	1.29993E-6
e	5.41026E-9	1.69711E-9	-2.24671E-7	-2.33589E-8	-4.37973E-7	4.07765E-7
i	-7.16130E-7	-2.24671E-7	2.98172E-5	3.09860E-6	5.79664E-5	-5.39773E-5
Ω	-7.44568E-8	-2.33589E-8	3.09860E-6	3.22169E-7	6.02690E-6	-5.61209E-6
ω	-1.39624E-6	-4.37973E-7	5.79664E-5	6.02690E-6	1.13030E-4	-1.05232E-4
M	1.29993E-6	4.07765E-7	-5.39773E-5	-5.61209E-6	-1.05232E-4	9.79737E-5

Date of computation: 2026-05-18 06:18 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

33.229

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

0.6 - 1.3*

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

0.1

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

1.247

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-05-15.339149

Unit

Source

[2]

Last Observation

Value

2026-05-15.453312

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

6 (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 2026JN4 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	1960-05-08 18:51	1350.3	0.0797560	0.0365440	0.0144217
EARTH	1983-05-21 17:03	> 1 d	0.0572331	0.0183285	0.0130201
EARTH	1986-09-27 22:58	773.4	0.1576287	0.1555499	0.0020040
MARS	1994-08-28 05:16	208.0	0.0415427	0.0362744	0.0039430
EARTH	2003-05-04 15:57	710.8	0.1632230	0.1345293	0.0095667
EARTH	2026-05-15 13:41	1.1	0.0000070	0.0000061	0.0000003

Download as: