Asteroids

2026DJ5 help

Last update: 2026-02-23 08:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.583

Aphelion (Q)

2.412

Eccentricity (e)

0.610

Inclination (i)

24.3

deg

Orbit period (P)

669.5

Earth MOID

0.00398

U parameter

8.5

Next Earth close approach

Date

2038-08-23

Nominal distance (from Earth center)

0.1405

21018945

Maximum Brightness

25.2

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

25.7

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-02-21

Observatory

Pan-STARRS 2, Haleakala

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

1.497664

1-sigma variation

0.003128

Unit

Eccentricity (e)

Value

0.610424

1-sigma variation

0.000979

Unit

Inclination (i)

Value

24.3359

1-sigma variation

0.0390

Unit

Long. of Ascending Node (Ω)

Value

330.5764

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

84.6182

1-sigma variation

0.0240

Unit

Mean Anomaly (M)

Value

338.89298

1-sigma variation

0.04223

Unit

Perihelion distance

Value

0.583453

1-sigma variation

Unit

Aphelion distance

Value

2.411874

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.123274

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.007313

1-sigma variation

Unit

MOID

Value

0.003984

1-sigma variation

Unit

Orbit Period

Value

669.4526

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.78252E-6	3.06056E-6	1.21932E-4	1.05876E-6	7.49013E-5	1.32095E-4
e	3.06056E-6	9.57529E-7	3.81485E-5	3.31106E-7	2.34330E-5	4.13274E-5
i	1.21932E-4	3.81485E-5	1.52033E-3	1.30854E-5	9.33377E-4	1.64659E-3
Ω	1.05876E-6	3.31106E-7	1.30854E-5	1.39663E-7	8.14888E-6	1.42704E-5
ω	7.49013E-5	2.34330E-5	9.33377E-4	8.14888E-6	5.73634E-4	1.01136E-3
M	1.32095E-4	4.13274E-5	1.64659E-3	1.42704E-5	1.01136E-3	1.78373E-3

Date of computation: 2026-02-23 08:30 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

25.713

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

19 - 40*

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

[-]

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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

0.6

Unit

Source

[1]

Normalized RMS of residuals

Value

0.65872

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-02-21.398934

Unit

Source

[2]

Last Observation

Value

2026-02-23.17386

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (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

Close Approaches for 2026DJ5 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	1951-02-13 12:44	> 1 mo	0.1261711	0.0066938	5.9589547
EARTH	1963-08-26 13:42	> 1 mo	0.1770426	0.0872801	3.8416188
EARTH	1974-08-17 02:17	> 1 mo	0.0793571	0.0772952	0.6597510
EARTH	1985-08-08 10:08	> 1 mo	0.1534261	0.0804851	1.9818802
EARTH	2004-02-27 19:19	> 1 mo	0.1801831	0.0018389	0.7908626
EARTH	2015-02-20 05:23	> 1 w	0.0196741	0.0051882	0.2079809
EARTH	2026-02-18 22:23	< 1 min	0.0060859	0.0060586	0.0000091
EARTH	2038-08-23 10:22	> 1 w	0.1405030	0.0781092	0.2072708
EARTH	2049-08-07 03:02	> 1 w	0.1744464	0.0775621	0.3907879
EARTH	2068-02-16 11:03	> 1 mo	0.0683565	0.0006904	0.6695845
EARTH	2080-08-16 08:38	> 1 w	0.0722833	0.0707323	0.0739514
EARTH	2099-02-22 11:35	> 1 d	0.0662014	0.0008595	0.1512114
EARTH	2111-08-29 08:55	> 1 w	0.1996848	0.0889358	0.0928847
EARTH	2122-08-12 15:57	> 1 w	0.1047369	0.0687248	0.2499884

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
56.37924984	48.10624534	0.00398436	MINIMUM
305.15559948	222.26225387	0.07354380	MINIMUM
0.65676813	316.11191164	0.51570509	SADDLE
180.49747711	133.30759502	1.54535498	SADDLE
359.27469372	133.13273383	1.56324032	SADDLE
179.17607710	312.59963451	3.33856010	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2026DJ5

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2092-02-19.652	85196.652	0.381	0.22 ± 0.022	1.67E7	4.87E-8	1.68E0	-7.43
2099-02-19.412	87753.412	-0.360	0.12 ± 0.000	1.18E8	7.04E-9	1.67E0	-8.31
2100-02-19.680	88118.680	-4.507	0.13 ± 0.011	2.10E6	1.65E-11	1.62E0	-10.96


Based on 41 optical observations (of which 2 are rejected as outliers) from 2026/02/21.399 to 2026/02/23.174.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.12 and 1.12 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260223 083846.313 UTC.

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