Asteroids

2011CL50 help

Last update: 2024-04-23 14:44 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Aten

Perihelion (q)

0.754

Aphelion (Q)

1.012

Eccentricity (e)

0.146

Inclination (i)

0.2

deg

Orbit period (P)

303.1

Earth MOID

0.00120

U parameter

0.3

Next Earth close approach

Date

2025-10-19

Nominal distance (from Earth center)

0.16831

25178927

Maximum Brightness

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.3

mag

Diameter

9 - 21*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2011-02-12

Observatory

Mt. Lemmon Survey

Orbit Visualiser

Click the button to start Orbit Visualiser

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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.882973

1-sigma variation

3.593E-9

Unit

Eccentricity (e)

Value

0.146265

1-sigma variation

4.130E-8

Unit

Inclination (i)

Value

0.1905

1-sigma variation

6.127E-7

Unit

Long. of Ascending Node (Ω)

Value

354.5986

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

308.7950

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

117.61928

1-sigma variation

0.00003

Unit

Perihelion distance

Value

0.753826

1-sigma variation

Unit

Aphelion distance

Value

1.012121

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.212849

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.043164

1-sigma variation

Unit

MOID

Value

0.001200

1-sigma variation

Unit

Orbit Period

Value

303.0539

1-sigma variation

Unit

U parameter

Value

0.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.29107E-17	-8.53545E-17	1.21074E-15	-6.52761E-13	5.91705E-13	5.50529E-14
e	-8.53545E-17	1.70602E-15	-7.11537E-15	7.22666E-12	-6.31387E-12	-1.08829E-12
i	1.21074E-15	-7.11537E-15	3.75377E-13	-1.84923E-10	1.80516E-10	3.33735E-12
Ω	-6.52761E-13	7.22666E-12	-1.84923E-10	1.40747E-7	-1.36731E-7	-4.12524E-9
ω	5.91705E-13	-6.31387E-12	1.80516E-10	-1.36731E-7	1.33247E-7	3.52068E-9
M	5.50529E-14	-1.08829E-12	3.33735E-12	-4.12524E-9	3.52068E-9	7.20273E-10

Date of computation: 2024-04-23 10:08 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

27.263

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

9 - 21*

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 ODIM	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

3628

Unit

Source

[1]

Unobserved

Value

1191

Unit

Source

[1]

Normalized RMS of residuals

Value

0.935683

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2011-02-12.46221

Unit

Source

[2]

Last Observation

Value

2021-01-18.908956

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

133 (5)

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

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 2011CL50 from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1956-01-05 18:47	198.7	0.0240104	0.0200936	0.0013059
EARTH	1956-05-10 18:50	> 1 d	0.1617915	0.1590665	0.0009083
EARTH	1961-03-04 16:03	250.1	0.0157265	0.0150659	0.0002205
EARTH	1966-02-25 08:30	353.0	0.0226952	0.0222015	0.0001646
EARTH	1971-01-15 00:02	52.4	0.0162175	0.0160966	0.0000403
EARTH	1976-02-28 18:04	3.5	0.0157234	0.0157135	0.0000033
EARTH	1981-01-25 17:45	45.3	0.0269744	0.0269483	0.0000087
EARTH	1986-01-07 23:19	3.5	0.0145494	0.0145393	0.0000033
EARTH	1991-02-24 01:37	< 1 min	0.0166375	0.0166362	0.0000004
EARTH	1996-02-03 06:57	1.8	0.0290373	0.0290367	0.0000002
EARTH	2001-01-05 11:21	< 1 min	0.0182924	0.0182919	0.0000002
EARTH	2006-01-26 16:53	< 1 min	0.0290178	0.0290177	0.0000000
EARTH	2011-02-19 17:23	< 1 s	0.0159764	0.0159762	0.0000001
EARTH	2016-01-05 04:06	< 1 min	0.0217706	0.0217706	0.0000000
EARTH	2020-12-28 09:53	< 1 s	0.0144734	0.0144734	0.0000000
EARTH	2025-10-19 03:28	< 1 min	0.1683107	0.1683104	0.0000001
EARTH	2026-02-27 17:06	< 1 min	0.0343178	0.0343174	0.0000001
EARTH	2039-12-17 12:56	< 1 min	0.1782012	0.1781985	0.0000009
EARTH	2045-01-07 22:29	1.0	0.0231937	0.0231925	0.0000004
EARTH	2050-02-26 21:56	< 1 min	0.1878671	0.1878616	0.0000018
VENUS	2053-09-17 11:19	1.4	0.0382816	0.0382756	0.0000020
EARTH	2058-12-16 00:22	< 1 min	0.1550548	0.1550294	0.0000085
EARTH	2064-02-04 15:48	10.5	0.0243453	0.0243337	0.0000039
EARTH	2069-02-27 12:29	< 1 min	0.1519859	0.1519415	0.0000148
EARTH	2082-12-14 01:28	< 1 min	0.0800053	0.0799411	0.0000214
EARTH	2083-05-11 21:05	20.2	0.1956859	0.1956682	0.0000059
EARTH	2088-02-05 12:56	38.7	0.0241468	0.0240914	0.0000185
EARTH	2092-09-30 22:11	25.0	0.1950844	0.1950510	0.0000111
EARTH	2093-02-27 20:45	1.6	0.0784725	0.0784212	0.0000171
VENUS	2099-03-23 00:52	17.5	0.0343950	0.0343464	0.0000164
EARTH	2111-12-15 00:45	13.7	0.0702326	0.0683363	0.0006321
EARTH	2112-05-09 05:04	1044.4	0.1902025	0.1893084	0.0002980
EARTH	2117-01-25 13:36	282.8	0.0278015	0.0277211	0.0000268
EARTH	2121-10-02 19:48	849.6	0.1933219	0.1925754	0.0002488
EARTH	2122-03-01 00:47	5.2	0.0742103	0.0726480	0.0005208

Download as: