Asteroids

2018CC help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.836

Aphelion (Q)

1.732

Eccentricity (e)

0.349

Inclination (i)

8.5

deg

Orbit period (P)

531.3

Earth MOID

0.00052

U parameter

6.9

Next Earth close approach

Date

2031-06-30

Nominal distance (from Earth center)

0.10511

15724241

Maximum Brightness

24.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.6

mag

Diameter

13 - 29*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-02-04

Observatory

University of Arizona Catalina Sky 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.283801

1-sigma variation

0.000161

Unit

Eccentricity (e)

Value

0.348978

1-sigma variation

0.000126

Unit

Inclination (i)

Value

8.4546

1-sigma variation

0.0033

Unit

Long. of Ascending Node (Ω)

Value

317.4275

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

245.9943

1-sigma variation

0.0035

Unit

Mean Anomaly (M)

Value

229.16094

1-sigma variation

0.38523

Unit

Perihelion distance

Value

0.835783

1-sigma variation

Unit

Aphelion distance

Value

1.731820

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.299962

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001156

1-sigma variation

Unit

MOID

Value

0.000524

1-sigma variation

Unit

Orbit Period

Value

531.3066

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.58527E-8	2.03264E-8	5.31619E-7	3.17832E-8	5.64199E-7	-6.19406E-5
e	2.03264E-8	1.59815E-8	4.17989E-7	2.49904E-8	4.43637E-7	-4.87000E-5
i	5.31619E-7	4.17989E-7	1.09325E-5	6.53655E-7	1.16043E-5	-1.27371E-3
Ω	3.17832E-8	2.49904E-8	6.53655E-7	3.91197E-8	6.93937E-7	-7.61494E-5
ω	5.64199E-7	4.43637E-7	1.16043E-5	6.93937E-7	1.23232E-5	-1.35177E-3
M	-6.19406E-5	-4.87000E-5	-1.27371E-3	-7.61494E-5	-1.35177E-3	1.48403E-1

Date of computation: 2026-06-04 23:11 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

26.554

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

13 - 29*

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

3041

Unit

Source

[1]

Normalized RMS of residuals

Value

0.502536

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-01-20.44907

Unit

Source

[2]

Last Observation

Value

2018-02-06.36011

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

48 (3)

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

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 2018CC 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	1950-07-10 22:49	> 1 d	0.0869334	0.0850937	0.0067633
EARTH	1957-03-19 15:59	> 1 w	0.1872534	0.1456955	0.0144688
EARTH	1968-07-11 21:28	1412.3	0.0951491	0.0843799	0.0098500
EARTH	1986-07-15 02:03	1423.6	0.1287780	0.0882634	0.0175152
EARTH	2000-01-31 08:09	> 1 d	0.1086283	0.0387509	0.0233034
EARTH	2018-02-06 20:10	< 1 s	0.0012639	0.0012625	0.0000005
EARTH	2031-06-30 16:10	1395.8	0.1051101	0.0954114	0.0062483
EARTH	2034-02-08 01:52	> 1 d	0.0153473	0.0004713	0.0198926
EARTH	2053-02-01 07:36	> 1 mo	0.0761593	0.0004826	0.5790102
EARTH	2066-07-09 11:29	> 1 w	0.1577693	0.0947483	0.2200543
EARTH	2069-03-28 15:52	> 1 mo	0.1922959	0.1102987	0.0746432
EARTH	2085-06-30 11:06	> 1 w	0.1022954	0.0954393	0.0959893
EARTH	2088-02-16 04:20	> 1 mo	0.0795772	0.0034462	0.3656169
EARTH	2104-06-21 02:28	> 1 mo	0.1573752	0.0871195	0.4979630
EARTH	2107-02-08 15:18	> 1 mo	0.0034278	0.0022982	0.5214956

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
311.52038355	35.64706657	0.00027150	MINIMUM
58.18478965	179.80186349	0.09540096	MINIMUM
7.96256204	112.32318363	0.21331531	SADDLE
183.00356936	284.55179405	0.75640120	SADDLE
3.63701066	286.02181873	1.82813810	SADDLE
181.06225452	103.19992387	2.73050038	MAXIMUM

Download:

MOID Plots

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