Asteroids

2026CQ4 help

Last update: 2026-02-23 13:15 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.993

Aphelion (Q)

2.394

Eccentricity (e)

0.414

Inclination (i)

0.9

deg

Orbit period (P)

805.0

Earth MOID

0.00004

U parameter

6.9

Next Earth close approach

Date

2072-04-16

Nominal distance (from Earth center)

0.06697

10018452

Maximum Brightness

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

27.7

mag

Diameter

8 - 17*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-02-15

Observatory

Mt. Lemmon Survey

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

1.693489

1-sigma variation

0.000374

Unit

Eccentricity (e)

Value

0.413779

1-sigma variation

0.000129

Unit

Inclination (i)

Value

0.9111

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

1.5427

1-sigma variation

0.0012

Unit

Arg. of Perihelion (ω)

Value

169.5906

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

311.77864

1-sigma variation

0.01584

Unit

Perihelion distance

Value

0.992759

1-sigma variation

Unit

Aphelion distance

Value

2.394219

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.363392

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.000083

1-sigma variation

Unit

MOID

Value

0.000035

1-sigma variation

Unit

Orbit Period

Value

804.9559

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.39588E-7	4.82776E-8	8.54521E-8	4.11628E-7	5.18520E-8	5.91977E-6
e	4.82776E-8	1.66972E-8	2.95549E-8	1.42341E-7	1.79664E-8	2.04739E-6
i	8.54521E-8	2.95549E-8	5.24516E-8	2.46989E-7	3.74426E-8	3.62367E-6
Ω	4.11628E-7	1.42341E-7	2.46989E-7	1.39450E-6	-5.13810E-8	1.74654E-5
ω	5.18520E-8	1.79664E-8	3.74426E-8	-5.13810E-8	2.56987E-7	2.18663E-6
M	5.91977E-6	2.04739E-6	3.62367E-6	1.74654E-5	2.18663E-6	2.51052E-4

Date of computation: 2026-02-23 13:15 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

27.734

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

8 - 17*

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

0.4

Unit

Source

[1]

Normalized RMS of residuals

Value

0.651926

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-02-14.374179

Unit

Source

[2]

Last Observation

Value

2026-02-23.41147

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

47 (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 2026CQ4 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	1951-04-08 16:34	> 1 d	0.0320951	0.0018711	0.0154529
EARTH	1962-04-16 19:49	> 1 d	0.0738783	0.0077757	0.0222552
EARTH	2015-02-04 11:44	> 1 d	0.1209815	0.0552802	0.0219676
EARTH	2026-02-22 07:47	< 1 min	0.0224579	0.0224386	0.0000064
EARTH	2072-04-16 18:06	> 1 w	0.0669692	0.0038024	0.0592563
EARTH	2083-03-20 21:30	> 1 w	0.0004226	0.0000181	0.0086589
EARTH	2085-02-09 14:11	> 1 mo	0.0402370	0.0227474	20.1024692
EARTH	2087-01-21 23:32	> 1 mo	0.1697581	0.0319381	53.9261017

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
6.76698245	79.34406905	0.00003518	MINIMUM
180.86162952	250.77481928	1.38766758	SADDLE
2.10085340	252.13282157	1.99912245	SADDLE
180.85728738	70.76754819	3.38910383	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2026CQ4

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2072-03-20.857	77921.857	-4.742	1.18 ± 0.004	1.37E3	1.50E-8	2.59E-2	-9.24
2072-03-21.256	77922.256	-1.599	2.21 ± 0.003	3.05E2	1.44E-3	2.60E-2	-4.26
2072-03-21.262	77922.262	-1.598	2.14 ± 0.003	3.07E2	1.42E-3	2.60E-2	-4.27
2072-03-21.308	77922.308	-1.596	1.63 ± 0.006	3.43E2	1.18E-3	2.60E-2	-4.35
2072-03-21.379	77922.379	-1.593	1.26 ± 0.005	1.11E2	3.69E-3	2.60E-2	-3.85
2072-03-21.404	77922.404	-1.592	1.31 ± 0.006	1.63E2	2.64E-3	2.60E-2	-4.00
2080-03-20.966	80843.966	-1.600	0.09 ± 0.000	1.60E8	3.07E-9	2.60E-2	-10.00
2083-03-21.771	81939.771	-0.048	1.09 ± 0.003	2.77E2	5.63E-3	2.61E-2	-3.76
2083-03-21.959	81939.959	0.918	0.05 ± 0.002	1.71E2	6.80E-3	2.61E-2	-3.67
2085-03-20.531	82669.531	0.004	2.03 ± 0.000	3.58E5	3.16E-6	2.60E-2	-7.02
2085-03-20.669	82669.669	0.834	1.85 ± 0.001	4.60E4	1.50E-5	2.61E-2	-6.34
2088-03-21.241	83766.241	0.937	0.87 ± 0.000	6.20E6	1.73E-7	2.61E-2	-8.30
2091-03-21.129	84861.129	-1.674	1.93 ± 0.005	4.56E5	6.05E-7	2.60E-2	-7.78
2095-03-21.347	86322.347	0.879	0.86 ± 0.018	2.49E6	4.80E-7	2.61E-2	-7.91
2103-03-21.863	89243.863	-0.294	1.96 ± 0.006	9.09E3	1.38E-4	2.61E-2	-5.50
2103-03-22.014	89244.014	1.328	1.49 ± 0.003	2.49E4	2.31E-5	2.61E-2	-6.27
2114-03-21.843	93261.843	-0.007	2.00 ± 0.045	1.24E7	9.31E-8	2.60E-2	-8.73
2114-03-21.990	93261.990	1.530	1.51 ± 0.002	1.82E4	2.40E-5	2.61E-2	-6.31
2114-03-22.107	93262.107	-1.153	0.74 ± 0.004	1.63E4	5.34E-5	2.60E-2	-5.97
2114-03-24.789	93264.789	-0.080	1.64 ± 0.017	1.74E6	7.48E-7	2.60E-2	-7.82
2117-03-29.487	94365.487	-0.092	2.07 ± 0.041	2.24E6	3.07E-7	2.62E-2	-8.22
2117-03-31.948	94367.948	-0.092	1.62 ± 0.032	1.45E7	9.04E-8	2.62E-2	-8.75
2121-03-21.105	95818.105	-1.421	0.89 ± 0.003	4.14E5	1.44E-6	2.60E-2	-7.57
2123-03-22.254	96549.254	-1.265	0.70 ± 0.006	4.38E5	1.72E-6	2.60E-2	-7.50
2124-03-22.710	96915.710	0.960	0.89 ± 0.127	4.61E7	2.24E-8	2.61E-2	-9.39
2125-03-22.183	97280.183	-0.513	0.70 ± 0.003	1.09E5	1.35E-5	2.61E-2	-6.61
2125-03-22.329	97280.329	1.685	2.04 ± 0.004	1.41E3	1.31E-4	2.61E-2	-5.63
2125-03-23.512	97281.512	-1.568	0.95 ± 0.000	1.10E7	4.26E-8	2.61E-2	-9.11


Based on 47 optical observations (of which 0 are rejected as outliers) from 2026/02/14.374 to 2026/02/23.411.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 2.22 and 2.22 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260223 143355.300 UTC.

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