Asteroids

2026AS3 help

Last update: 2026-01-17 13:01 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.604

Aphelion (Q)

3.271

Eccentricity (e)

0.688

Inclination (i)

9.8

deg

Orbit period (P)

985.0

Earth MOID

0.01476

U parameter

8.5

Next Earth close approach

Date

2042-07-14

Nominal distance (from Earth center)

0.02422

3623439

Maximum Brightness

18.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.5

mag

Diameter

30 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-14

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.937381

1-sigma variation

0.005402

Unit

Eccentricity (e)

Value

0.688486

1-sigma variation

0.001061

Unit

Inclination (i)

Value

9.8358

1-sigma variation

0.0142

Unit

Long. of Ascending Node (Ω)

Value

119.1614

1-sigma variation

0.0025

Unit

Arg. of Perihelion (ω)

Value

81.8070

1-sigma variation

0.0033

Unit

Mean Anomaly (M)

Value

322.62690

1-sigma variation

0.16832

Unit

Perihelion distance

Value

0.603521

1-sigma variation

Unit

Aphelion distance

Value

3.271241

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.056212

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.112376

1-sigma variation

Unit

MOID

Value

0.014758

1-sigma variation

Unit

Orbit Period

Value

984.9656

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.91780E-5	5.73056E-6	7.67897E-5	-1.36213E-5	1.77559E-5	9.09201E-4
e	5.73056E-6	1.12549E-6	1.50816E-5	-2.67517E-6	3.48867E-6	1.78567E-4
i	7.67897E-5	1.50816E-5	2.02098E-4	-3.58511E-5	4.67441E-5	2.39280E-3
Ω	-1.36213E-5	-2.67517E-6	-3.58511E-5	6.36169E-6	-8.27956E-6	-4.24447E-4
ω	1.77559E-5	3.48867E-6	4.67441E-5	-8.27956E-6	1.11067E-5	5.53279E-4
M	9.09201E-4	1.78567E-4	2.39280E-3	-4.24447E-4	5.53279E-4	2.83311E-2

Date of computation: 2026-01-17 13:01 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

24.526

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

30 - 70*

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

0.69956

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-12.308855

Unit

Source

[2]

Last Observation

Value

2026-01-17.106628

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

35 (5)

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 100 points and a final date not exceeding 2080/07/22 14:12.

Close Approaches for 2026AS3 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	1961-07-22 22:41	> 1 mo	0.1878737	0.0316975	13.3824522
VENUS	1980-03-31 15:10	> 1 mo	0.0418451	0.0161663	4.4103860
EARTH	1988-07-15 21:29	> 1 mo	0.0534722	0.0289330	5.2774995
EARTH	1999-01-24 22:20	> 1 mo	0.1484586	0.0242565	4.6026282
VENUS	2015-04-28 12:02	> 1 w	0.0191399	0.0187102	0.0646150
EARTH	2015-07-08 15:19	> 1 w	0.0943688	0.0244550	0.2629577
EARTH	2026-01-16 17:01	< 1 min	0.0342848	0.0341282	0.0000522
EARTH	2042-07-07 11:34	> 1 mo	0.1039553	0.0223329	0.4541736
EARTH	2053-01-22 19:58	> 1 mo	0.1253523	0.0145013	0.7238188
VENUS	2063-12-04 02:10	> 1 mo	0.0227031	0.0214554	0.2720174
EARTH	2069-07-10 06:27	> 1 mo	0.0630905	0.0205746	2.9122252
EARTH	2096-07-13 00:32	> 1 mo	0.0189645	0.0163416	2.9409280
EARTH	2123-07-08 19:17	> 1 mo	0.1117042	0.0105428	37.1310202

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
315.86009515	12.81011897	0.01475786	MINIMUM
46.74252028	190.30038122	0.02437730	MINIMUM
2.09160685	102.85050053	0.42201658	SADDLE
1.79450491	282.15655527	1.59550272	SADDLE
180.41684232	280.02546105	2.29446488	SADDLE
180.25905976	99.95859003	4.26422154	MAXIMUM

Download:

MOID Plots

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