Asteroids

2026AU help

Last update: 2026-02-02 12:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.777

Aphelion (Q)

1.807

Eccentricity (e)

0.399

Inclination (i)

2.1

deg

Orbit period (P)

536.5

Earth MOID

0.00148

U parameter

6.6

Next Earth close approach

Date

2028-08-16

Nominal distance (from Earth center)

0.11318

16931134

Maximum Brightness

27.2

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

7 - 15*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-09

Observatory

Palomar Mountain--ZTF

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

1.292228

1-sigma variation

0.000141

Unit

Eccentricity (e)

Value

0.398704

1-sigma variation

0.000099

Unit

Inclination (i)

Value

2.1193

1-sigma variation

0.0009

Unit

Long. of Ascending Node (Ω)

Value

110.7277

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

282.8301

1-sigma variation

0.0011

Unit

Mean Anomaly (M)

Value

2.10291

1-sigma variation

0.00238

Unit

Perihelion distance

Value

0.777012

1-sigma variation

Unit

Aphelion distance

Value

1.807444

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.014183

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.175119

1-sigma variation

Unit

MOID

Value

0.001477

1-sigma variation

Unit

Orbit Period

Value

536.5464

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.97890E-8	1.39720E-8	1.20309E-7	-5.64010E-8	-1.52913E-7	-3.34262E-7
e	1.39720E-8	9.86488E-9	8.49452E-8	-3.98216E-8	-1.07971E-7	-2.36003E-7
i	1.20309E-7	8.49452E-8	7.31581E-7	-3.42880E-7	-9.29995E-7	-2.03209E-6
Ω	-5.64010E-8	-3.98216E-8	-3.42880E-7	1.60796E-7	4.35740E-7	9.52695E-7
ω	-1.52913E-7	-1.07971E-7	-9.29995E-7	4.35740E-7	1.18313E-6	2.58258E-6
M	-3.34262E-7	-2.36003E-7	-2.03209E-6	9.52695E-7	2.58258E-6	5.64617E-6

Date of computation: 2026-02-02 12:45 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

27.996

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

7 - 15*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.63785

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-09.275588

Unit

Source

[2]

Last Observation

Value

2026-01-18.575743

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

48 (1)

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 2026AU 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	1951-01-17 12:50	> 1 d	0.1512494	0.0562582	0.0316659
EARTH	1953-12-02 08:21	> 1 w	0.1736473	0.1335814	0.0133718
EARTH	1956-09-20 06:41	> 1 w	0.1916884	0.1621981	0.0098308
EARTH	1959-07-29 20:03	> 1 d	0.1126300	0.0422520	0.0237730
MARS	1969-01-09 07:34	19.0	0.0274696	0.0181752	0.0043362
EARTH	1976-01-19 15:15	164.8	0.1803926	0.1697476	0.0035483
EARTH	1978-12-07 00:32	> 1 d	0.1642127	0.1487773	0.0051463
EARTH	1981-09-25 03:48	> 1 d	0.1988484	0.1873110	0.0038459
EARTH	1984-07-30 14:01	1293.5	0.0918159	0.0457225	0.0155600
EARTH	2001-01-16 19:19	> 1 d	0.1351945	0.0635518	0.0238814
EARTH	2003-11-23 00:32	> 1 w	0.1931243	0.1684136	0.0082462
EARTH	2006-09-06 05:54	> 1 d	0.1619862	0.1248029	0.0123986
EARTH	2009-07-25 16:41	1115.3	0.1869028	0.1374095	0.0165135
EARTH	2026-01-08 20:30	< 1 s	0.0017082	0.0017068	0.0000004
EARTH	2028-08-16 20:05	808.7	0.1131776	0.1045517	0.0028771
EARTH	2039-01-09 11:44	1359.4	0.0048418	0.0014727	0.0122565
EARTH	2044-07-28 05:07	> 1 mo	0.1345511	0.0182489	0.9723176
EARTH	2058-01-10 03:41	> 1 mo	0.0127397	0.0011802	5.8646108
EARTH	2063-08-09 11:53	> 1 mo	0.0330166	0.0188659	59.6083020
MARS	2081-11-16 13:32	> 1 mo	0.0479681	0.0324818	217.8418579
EARTH	2083-01-09 11:03	> 1 mo	0.0011756	0.0009237	294.3472111
EARTH	2085-07-27 09:58	> 1 mo	0.1004311	0.0226596	80906.2936757
EARTH	2092-12-25 10:50	> 1 mo	0.1178485	0.0045895	262167.3825861
EARTH	2122-08-16 03:27	> 1 mo	0.1100506	0.0172367	476765.8788184

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
53.23111513	6.91270383	0.00147728	MINIMUM
302.32969976	212.73025096	0.01464535	MINIMUM
357.10306296	289.04351315	0.21993794	SADDLE
178.76915107	110.94022882	0.80182381	SADDLE
357.19454617	109.19565547	1.78357684	SADDLE
178.84124685	290.99407472	2.80137289	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2026AU

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2097-01-09.556	86982.556	0.704	0.41 ± 0.000	9.13E6	9.28E-8	2.86E-2	-8.60
2097-01-09.717	86982.717	0.718	0.97 ± 0.001	4.13E6	1.56E-7	2.86E-2	-8.37
2103-01-11.242	89174.242	0.136	0.43 ± 0.000	1.89E6	5.68E-7	2.86E-2	-7.84
2106-01-10.673	90269.673	-0.653	0.08 ± 0.000	5.81E7	1.57E-8	2.87E-2	-9.42
2119-01-11.297	95018.297	-0.339	1.21 ± 0.000	1.50E6	6.08E-7	2.86E-2	-7.90
2119-01-11.619	95018.619	0.801	0.38 ± 0.000	8.68E6	9.13E-8	2.87E-2	-8.72
2120-01-11.405	95383.405	-0.192	0.17 ± 0.003	1.08E7	1.02E-7	2.87E-2	-8.68
2120-01-11.488	95383.488	-0.411	1.27 ± 0.002	1.15E7	4.00E-8	2.87E-2	-9.08
2120-01-11.498	95383.498	-0.617	0.63 ± 0.002	9.94E6	8.44E-8	2.87E-2	-8.76
2120-01-11.509	95383.509	-0.626	1.39 ± 0.000	5.14E6	3.51E-8	2.87E-2	-9.14
2121-01-10.538	95748.538	-0.309	0.33 ± 0.032	2.00E8	5.25E-9	2.87E-2	-9.97
2121-01-10.816	95748.816	-0.311	1.28 ± 0.001	3.70E6	1.25E-7	2.86E-2	-8.59
2123-01-11.495	96479.495	0.397	1.16 ± 0.002	6.76E6	1.09E-7	2.86E-2	-8.66
2125-01-10.247	97209.247	-0.834	1.19 ± 0.001	8.99E6	4.83E-8	2.88E-2	-9.02


Based on 48 optical observations (of which 1 are rejected as outliers) from 2026/01/09.276 to 2026/01/18.576.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.42 and 1.42 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260202 131646.309 UTC.

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