Asteroids

2026OC3 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.784

Aphelion (Q)

2.880

Eccentricity (e)

0.572

Inclination (i)

4.7

deg

Orbit period (P)

905.9

Earth MOID

0.00747

U parameter

7.5

Next Earth close approach

Date

2068-12-16

Nominal distance (from Earth center)

0.15794

23626844

Maximum Brightness

25.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.9

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-07-24

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

1.832320

1-sigma variation

0.001155

Unit

Eccentricity (e)

Value

0.572011

1-sigma variation

0.000312

Unit

Inclination (i)

Value

4.6937

1-sigma variation

0.0020

Unit

Long. of Ascending Node (Ω)

Value

126.8632

1-sigma variation

0.0007

Unit

Arg. of Perihelion (ω)

Value

242.8377

1-sigma variation

0.0010

Unit

Mean Anomaly (M)

Value

323.45330

1-sigma variation

0.03792

Unit

Perihelion distance

Value

0.784212

1-sigma variation

Unit

Aphelion distance

Value

2.880428

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.683495

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.037924

1-sigma variation

Unit

MOID

Value

0.007475

1-sigma variation

Unit

Orbit Period

Value

905.9422

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.33501E-6	3.60683E-7	2.22252E-6	4.57423E-7	-1.07351E-6	4.38096E-5
e	3.60683E-7	9.74490E-8	5.99830E-7	1.24460E-7	-2.90202E-7	1.18360E-5
i	2.22252E-6	5.99830E-7	3.91284E-6	4.72542E-7	-1.66513E-6	7.29550E-5
Ω	4.57423E-7	1.24460E-7	4.72542E-7	5.49782E-7	-5.29279E-7	1.49814E-5
ω	-1.07351E-6	-2.90202E-7	-1.66513E-6	-5.29279E-7	9.79148E-7	-3.52223E-5
M	4.38096E-5	1.18360E-5	7.29550E-5	1.49814E-5	-3.52223E-5	1.43765E-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

26.892

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

11 - 25*

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

0.7

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.942906

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-07-24.250673

Unit

Source

[2]

Last Observation

Value

2026-07-24.933162

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

16 (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 2026OC3 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	1954-11-16 16:51	> 1 w	0.1517678	0.0662838	0.0611373
EARTH	1964-08-01 00:28	> 1 mo	0.0752692	0.0109895	0.3622701
EARTH	1969-07-13 02:20	> 1 w	0.1552112	0.0118352	0.4177828
EARTH	2011-12-04 04:54	> 1 w	0.0731601	0.0642546	0.0398392
EARTH	2021-09-01 19:24	> 1 w	0.1940095	0.1568328	0.0125326
EARTH	2026-07-25 03:59	< 1 min	0.0073981	0.0073869	0.0000037
EARTH	2068-12-16 17:35	> 1 w	0.1579357	0.0636017	0.2498178
EARTH	2073-11-27 15:29	> 1 mo	0.1092660	0.0637549	0.2038267
EARTH	2083-08-25 23:01	> 1 mo	0.1748865	0.0353472	0.1509565
EARTH	2088-07-23 02:13	> 1 w	0.0234243	0.0059208	0.2369223
EARTH	2120-12-18 07:11	> 1 mo	0.1549048	0.0624242	4.5671532
EARTH	2125-11-12 12:42	> 1 mo	0.1721167	0.0642821	2.9373534

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
321.27373192	197.67875942	0.00747460	MINIMUM
36.62808400	330.63701312	0.06428131	MINIMUM
359.29389537	265.07995239	0.22650441	SADDLE
358.39977078	83.35523156	1.78145976	SADDLE
179.64796581	84.70279234	1.88589312	SADDLE
179.46741069	264.60740813	3.87998040	MAXIMUM

Download:

MOID Plots

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