Asteroids

2026OA help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.851

Aphelion (Q)

1.720

Eccentricity (e)

0.338

Inclination (i)

31.7

deg

Orbit period (P)

532.5

Earth MOID

0.00503

U parameter

8.1

Next Earth close approach

Date

2045-07-18

Nominal distance (from Earth center)

0.08649

12938939

Maximum Brightness

24.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.8

mag

Diameter

12 - 26*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-07-16

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.285796

1-sigma variation

0.001205

Unit

Eccentricity (e)

Value

0.337965

1-sigma variation

0.000597

Unit

Inclination (i)

Value

31.7175

1-sigma variation

0.0328

Unit

Long. of Ascending Node (Ω)

Value

292.6133

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

289.7110

1-sigma variation

0.0590

Unit

Mean Anomaly (M)

Value

12.48711

1-sigma variation

0.05637

Unit

Perihelion distance

Value

0.851242

1-sigma variation

Unit

Aphelion distance

Value

1.720349

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.005741

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.301761

1-sigma variation

Unit

MOID

Value

0.005034

1-sigma variation

Unit

Orbit Period

Value

532.5451

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.45093E-6	7.18905E-7	3.95050E-5	-3.20620E-7	7.10227E-5	-6.78998E-5
e	7.18905E-7	3.56211E-7	1.95744E-5	-1.58814E-7	3.51885E-5	-3.36425E-5
i	3.95050E-5	1.95744E-5	1.07566E-3	-8.72703E-6	1.93367E-3	-1.84871E-3
Ω	-3.20620E-7	-1.58814E-7	-8.72703E-6	7.11621E-8	-1.57038E-5	1.50064E-5
ω	7.10227E-5	3.51885E-5	1.93367E-3	-1.57038E-5	3.47690E-3	-3.32376E-3
M	-6.78998E-5	-3.36425E-5	-1.84871E-3	1.50064E-5	-3.32376E-3	3.17755E-3

Date of computation: 2026-07-30 14:25 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

26.784

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

12 - 26*

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

0.778992

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-07-16.354016

Unit

Source

[2]

Last Observation

Value

2026-07-18.321273

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2026OA 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	1956-07-23 11:29	592.6	0.1970616	0.1671383	0.0099746
EARTH	1975-07-10 09:57	> 1 w	0.1103844	0.0023974	0.1723396
EARTH	1991-07-18 12:06	> 1 w	0.0692575	0.0043727	0.2735946
EARTH	2026-07-15 08:53	< 1 min	0.0063317	0.0063096	0.0000074
EARTH	2045-07-18 21:44	> 1 w	0.0864915	0.0035178	0.1597430
EARTH	2086-07-10 08:16	> 1 w	0.1099295	0.0019268	0.2259291
EARTH	2105-07-15 11:26	> 1 d	0.0147412	0.0049033	0.1371979
EARTH	2124-07-07 21:11	> 1 mo	0.1766987	0.0035443	2.0474201

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
52.47346308	188.12510963	0.00503422	MINIMUM
285.25565728	20.75767264	0.23741347	MINIMUM
346.72347279	98.00081774	0.52714518	SADDLE
168.87571509	292.69018368	1.00060779	SADDLE
356.17322087	293.67544689	1.78025871	SADDLE
188.98891548	128.58427416	2.64894479	MAXIMUM

Download:

MOID Plots

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