Asteroids

2026AJ17 help

Last update: 2026-02-09 09:48 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.966

Aphelion (Q)

1.710

Eccentricity (e)

0.278

Inclination (i)

6.7

deg

Orbit period (P)

565.2

Earth MOID

0.03956

U parameter

7.2

Next Earth close approach

Date

2026-02-17

Nominal distance (from Earth center)

0.04452

6660251

Maximum Brightness

20.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.1

mag

Diameter

25 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-14

Observatory

Kitt Peak-Bok

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

1.337771

1-sigma variation

0.000324

Unit

Eccentricity (e)

Value

0.278045

1-sigma variation

0.000187

Unit

Inclination (i)

Value

6.7049

1-sigma variation

0.0040

Unit

Long. of Ascending Node (Ω)

Value

310.0770

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

233.5686

1-sigma variation

0.0026

Unit

Mean Anomaly (M)

Value

283.41118

1-sigma variation

0.02805

Unit

Perihelion distance

Value

0.965811

1-sigma variation

Unit

Aphelion distance

Value

1.709731

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.462646

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.073741

1-sigma variation

Unit

MOID

Value

0.039561

1-sigma variation

Unit

Orbit Period

Value

565.1597

1-sigma variation

Unit

U parameter

Value

7.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.04982E-7	6.04478E-8	1.29408E-6	-2.43152E-7	8.50451E-7	9.08691E-6
e	6.04478E-8	3.48059E-8	7.45112E-7	-1.39989E-7	4.89761E-7	5.23216E-6
i	1.29408E-6	7.45112E-7	1.59547E-5	-2.99806E-6	1.04856E-5	1.12010E-4
Ω	-2.43152E-7	-1.39989E-7	-2.99806E-6	5.65021E-7	-1.97034E-6	-2.10460E-5
ω	8.50451E-7	4.89761E-7	1.04856E-5	-1.97034E-6	6.92516E-6	7.35951E-5
M	9.08691E-6	5.23216E-6	1.12010E-4	-2.10460E-5	7.35951E-5	7.86546E-4

Date of computation: 2026-02-09 09:48 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

25.142

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

25 - 60*

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

0.414843

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-14.278924

Unit

Source

[2]

Last Observation

Value

2026-02-09.091556

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

31 (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 2026AJ17 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	1961-02-13 13:03	481.6	0.0400868	0.0387986	0.0007994
MARS	1967-10-06 18:25	94.9	0.0102445	0.0096968	0.0011906
EARTH	1978-03-20 03:01	> 1 w	0.1015257	0.0742124	0.0093811
EARTH	1995-05-20 01:06	> 1 d	0.1610046	0.1196582	0.0244017
EARTH	2009-02-05 14:43	> 1 d	0.1120824	0.0342779	0.0366208
EARTH	2026-02-17 21:28	< 1 min	0.0445210	0.0444385	0.0000275
EARTH	2043-05-06 16:06	> 1 d	0.1195886	0.1178022	0.0055212
EARTH	2057-01-31 18:55	> 1 d	0.1955407	0.0296890	0.0713123
EARTH	2074-02-17 08:12	> 1 w	0.0431582	0.0404810	0.0248514
EARTH	2091-05-15 18:53	> 1 mo	0.1312197	0.1180438	0.1848341
EARTH	2105-02-07 08:07	> 1 mo	0.1117217	0.0359963	0.6378777
EARTH	2122-03-14 18:14	> 1 mo	0.0950989	0.0069143	0.1594254

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
331.27845483	43.93770080	0.03956112	MINIMUM
183.73601654	265.54843807	0.71819214	SADDLE
4.16801072	266.67923227	1.96587085	SADDLE
181.51909559	83.87373307	2.70550284	MAXIMUM

Download:

MOID Plots

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