Asteroids

2026AR1 help

Last update: 2026-01-16 13:16 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.727

Aphelion (Q)

3.126

Eccentricity (e)

0.623

Inclination (i)

4.0

deg

Orbit period (P)

976.6

Earth MOID

0.00009

U parameter

7.7

Next Earth close approach

Date

2055-06-22

Nominal distance (from Earth center)

0.11188

16737205

Maximum Brightness

24.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-09

Observatory

Pan-STARRS 1, 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

1.926423

1-sigma variation

0.001659

Unit

Eccentricity (e)

Value

0.622583

1-sigma variation

0.000377

Unit

Inclination (i)

Value

4.0103

1-sigma variation

0.0021

Unit

Long. of Ascending Node (Ω)

Value

295.9694

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

251.3445

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

323.20862

1-sigma variation

0.05095

Unit

Perihelion distance

Value

0.727065

1-sigma variation

Unit

Aphelion distance

Value

3.125782

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.456221

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.000608

1-sigma variation

Unit

MOID

Value

0.000085

1-sigma variation

Unit

Orbit Period

Value

976.6208

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.75238E-6	6.25099E-7	3.40868E-6	4.25873E-7	1.02892E-6	8.45299E-5
e	6.25099E-7	1.41968E-7	7.74156E-7	9.67191E-8	2.33718E-7	1.91978E-5
i	3.40868E-6	7.74156E-7	4.22174E-6	5.27258E-7	1.27507E-6	1.04686E-4
Ω	4.25873E-7	9.67191E-8	5.27258E-7	6.60527E-8	1.58573E-7	1.30793E-5
ω	1.02892E-6	2.33718E-7	1.27507E-6	1.58573E-7	3.94717E-7	3.15991E-5
M	8.45299E-5	1.91978E-5	1.04686E-4	1.30793E-5	3.15991E-5	2.59605E-3

Date of computation: 2026-01-16 13:16 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

25.99

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

17 - 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

[-]

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

0.554525

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-09.380084

Unit

Source

[2]

Last Observation

Value

2026-01-15.376399

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

71 (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 2026AR1 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	1951-05-18 05:51	> 1 mo	0.1957250	0.0408360	0.3037732
EARTH	1959-06-06 18:50	> 1 mo	0.0861170	0.0437956	0.3874558
EARTH	1967-06-16 00:10	> 1 w	0.0536074	0.0427389	0.2573419
EARTH	1975-06-22 13:57	> 1 w	0.1399734	0.0418677	0.4191298
EARTH	2018-01-05 19:46	> 1 d	0.1795142	0.0018992	0.0658104
EARTH	2026-01-15 22:09	< 1 s	0.0075543	0.0075417	0.0000042
EARTH	2055-06-22 05:44	> 1 w	0.1118813	0.0367924	0.2429489
EARTH	2063-06-01 16:50	> 1 mo	0.1348033	0.0352314	0.2406082
EARTH	2087-01-20 22:41	> 1 w	0.0450459	0.0030543	0.1781542
EARTH	2095-01-10 00:43	> 1 w	0.1150649	0.0035258	0.1365678
EARTH	2124-06-17 19:37	> 1 mo	0.0365546	0.0324488	0.3943343

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
321.78307644	14.38311258	0.00008508	MINIMUM
40.97872125	161.28958855	0.03917793	MINIMUM
2.05765535	88.87354788	0.27878937	SADDLE
1.77007582	268.27532779	1.72770879	SADDLE
180.44780701	266.49944053	2.12666145	SADDLE
180.37234482	86.46227708	4.12315976	MAXIMUM

Download:

MOID Plots

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