Asteroids

2026CS help

Last update: 2026-02-09 13:01 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.765

Aphelion (Q)

3.133

Eccentricity (e)

0.608

Inclination (i)

3.1

deg

Orbit period (P)

993.8

Earth MOID

0.00040

U parameter

7.5

Next Earth close approach

Date

2061-03-18

Nominal distance (from Earth center)

0.1981

29634803

Maximum Brightness

31.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.6

mag

Diameter

8 - 18*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-02-06

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

1.948918

1-sigma variation

0.001252

Unit

Eccentricity (e)

Value

0.607642

1-sigma variation

0.000287

Unit

Inclination (i)

Value

3.0963

1-sigma variation

0.0012

Unit

Long. of Ascending Node (Ω)

Value

320.5977

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

246.6869

1-sigma variation

0.0009

Unit

Mean Anomaly (M)

Value

315.35285

1-sigma variation

0.04533

Unit

Perihelion distance

Value

0.764674

1-sigma variation

Unit

Aphelion distance

Value

3.133162

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.605051

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.003428

1-sigma variation

Unit

MOID

Value

0.000400

1-sigma variation

Unit

Orbit Period

Value

993.7766

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.56644E-6	3.58760E-7	1.48226E-6	2.20897E-7	5.40831E-7	5.67366E-5
e	3.58760E-7	8.21754E-8	3.39583E-7	5.04945E-8	1.26390E-7	1.29941E-5
i	1.48226E-6	3.39583E-7	1.40584E-6	2.06896E-7	5.41961E-7	5.36845E-5
Ω	2.20897E-7	5.04945E-8	2.06896E-7	3.28912E-8	4.83413E-8	8.00358E-6
ω	5.40831E-7	1.26390E-7	5.41961E-7	4.83413E-8	8.96705E-7	1.95185E-5
M	5.67366E-5	1.29941E-5	5.36845E-5	8.00358E-6	1.95185E-5	2.05501E-3

Date of computation: 2026-02-09 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

27.595

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 - 18*

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

0.64476

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-02-06.461548

Unit

Source

[2]

Last Observation

Value

2026-02-08.518127

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

24 (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 2026CS 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	1958-01-30 07:29	> 1 w	0.1533527	0.0047661	0.1378751
EARTH	1966-06-26 09:29	> 1 w	0.0465962	0.0407813	0.0474688
EARTH	1977-02-25 16:17	> 1 w	0.1289239	0.0062154	0.1437740
EARTH	2015-06-16 06:57	> 1 w	0.1228335	0.0370411	0.0530893
EARTH	2026-02-09 16:05	< 1 min	0.0072638	0.0072542	0.0000032
MARS	2047-07-02 17:38	> 1 d	0.0313567	0.0214882	0.0650537
EARTH	2061-03-18 11:00	> 1 mo	0.1980964	0.0205226	0.1483159
EARTH	2069-06-24 03:20	> 1 mo	0.0711305	0.0357208	0.3205931
EARTH	2088-02-05 17:17	> 1 w	0.0787377	0.0028778	0.3103042
EARTH	2104-07-04 08:56	> 1 w	0.0525688	0.0338765	0.2002827
EARTH	2123-02-12 21:08	> 1 mo	0.0054511	0.0053699	0.0958100

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
324.27851135	39.11889208	0.00040004	MINIMUM
38.37945295	176.28645871	0.03767944	MINIMUM
1.92133406	108.60674776	0.24520175	SADDLE
1.64479996	288.05591707	1.75978354	SADDLE
180.43120255	286.46676933	2.13907779	SADDLE
180.37970471	106.44431274	4.13776909	MAXIMUM

Download:

MOID Plots

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