Asteroids

2026AS2 help

Last update: 2026-01-21 12:46 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.815

Aphelion (Q)

1.756

Eccentricity (e)

0.366

Inclination (i)

16.3

deg

Orbit period (P)

532.2

Earth MOID

0.01508

U parameter

8.0

Next Earth close approach

Date

2026-01-29

Nominal distance (from Earth center)

0.01549

2317086

Maximum Brightness

16.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.1

mag

Diameter

40 - 90*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-11

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

1.285269

1-sigma variation

0.001066

Unit

Eccentricity (e)

Value

0.365958

1-sigma variation

0.000653

Unit

Inclination (i)

Value

16.3170

1-sigma variation

0.0237

Unit

Long. of Ascending Node (Ω)

Value

126.7440

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

73.4710

1-sigma variation

0.0136

Unit

Mean Anomaly (M)

Value

277.76415

1-sigma variation

0.12305

Unit

Perihelion distance

Value

0.814915

1-sigma variation

Unit

Aphelion distance

Value

1.755623

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.023052

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.226005

1-sigma variation

Unit

MOID

Value

0.015081

1-sigma variation

Unit

Orbit Period

Value

532.2176

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.13592E-6	6.95918E-7	2.52830E-5	-1.17692E-8	-1.44853E-5	1.31144E-4
e	6.95918E-7	4.26406E-7	1.54910E-5	-9.84395E-9	-8.86544E-6	8.03457E-5
i	2.52830E-5	1.54910E-5	5.62784E-4	-3.35187E-7	-3.22160E-4	2.91898E-3
Ω	-1.17692E-8	-9.84395E-9	-3.35187E-7	1.25749E-7	-2.68062E-7	-1.39840E-6
ω	-1.44853E-5	-8.86544E-6	-3.22160E-4	-2.68062E-7	1.86134E-4	-1.67223E-3
M	1.31144E-4	8.03457E-5	2.91898E-3	-1.39840E-6	-1.67223E-3	1.51408E-2

Date of computation: 2026-01-21 12:46 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

24.127

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

40 - 90*

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

0.7

Unit

Source

[1]

Normalized RMS of residuals

Value

0.624667

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-11.471574

Unit

Source

[2]

Last Observation

Value

2026-01-21.315437

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (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 2026AS2 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	1959-01-29 02:17	> 1 w	0.0140106	0.0134776	0.1365848
EARTH	1972-07-07 08:16	862.8	0.1644129	0.1282841	0.0965156
EARTH	1975-01-31 02:46	> 1 w	0.0345038	0.0132902	0.2792447
EARTH	1988-07-09 10:49	> 1 d	0.1268764	0.1252518	0.0344473
EARTH	1991-02-12 17:45	> 1 w	0.1877804	0.0134619	0.2162238
EARTH	2010-01-20 11:20	> 1 d	0.1761426	0.0086752	0.1292429
EARTH	2026-01-29 05:28	< 1 min	0.0154888	0.0154218	0.0000223
EARTH	2039-07-08 20:13	> 1 d	0.1339050	0.1229147	0.0386960
EARTH	2042-02-04 19:58	> 1 w	0.1074999	0.0102681	0.1258572
EARTH	2055-07-12 05:24	> 1 d	0.1428602	0.1221060	0.0966895
EARTH	2077-01-22 17:13	> 1 w	0.1316910	0.0131429	0.2515895
EARTH	2090-07-08 08:13	> 1 d	0.1957458	0.1217423	0.1275642
EARTH	2093-01-29 15:24	> 1 w	0.0182268	0.0170998	0.0539552
EARTH	2106-07-11 22:39	> 1 mo	0.1243808	0.1199786	0.4339422

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
308.04590797	27.22239203	0.01508074	MINIMUM
65.02902751	185.94990306	0.12359499	MINIMUM
9.12240681	110.95461577	0.31787824	SADDLE
184.63803852	282.10611532	0.84030547	SADDLE
4.29868290	283.57481753	1.79513758	SADDLE
180.26953701	99.02928341	2.73521945	MAXIMUM

Download:

MOID Plots

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