Asteroids

89830 2002CE help

Last update: 2025-05-11 12:45 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Amor

Perihelion (q)

1.024

Aphelion (Q)

3.131

Eccentricity (e)

0.507

Inclination (i)

43.6

deg

Orbit period (P)

1093.9

Earth MOID

0.02853

U parameter

0.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

14.9

mag

Diameter

3700

Taxonomic type

Rotation period (T)

2.615

Discovery Information

Discovery Date

2002-02-01

Observatory

Lincoln Laboratory ETS, New Mexico

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.077704

1-sigma variation

4.832E-9

Unit

Eccentricity (e)

Value

0.507005

1-sigma variation

4.123E-8

Unit

Inclination (i)

Value

43.6437

1-sigma variation

5.358E-6

Unit

Long. of Ascending Node (Ω)

Value

19.8891

1-sigma variation

5.915E-6

Unit

Arg. of Perihelion (ω)

Value

5.8451

1-sigma variation

7.174E-6

Unit

Mean Anomaly (M)

Value

319.07379

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.024298

1-sigma variation

Unit

Aphelion distance

Value

3.131111

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.028560

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

2.112565

1-sigma variation

Unit

MOID

Value

0.028535

1-sigma variation

Unit

Orbit Period

Value

1093.8909

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.33438E-17	1.02095E-17	-8.99819E-16	6.10083E-16	4.65012E-15	-2.20143E-14
e	1.02095E-17	1.69993E-15	-2.36907E-15	-3.34518E-14	-2.21244E-14	-7.49632E-14
i	-8.99819E-16	-2.36907E-15	2.87135E-11	-5.90556E-12	1.12854E-12	4.35569E-12
Ω	6.10083E-16	-3.34518E-14	-5.90556E-12	3.49870E-11	-2.68904E-11	4.38355E-12
ω	4.65012E-15	-2.21244E-14	1.12854E-12	-2.68904E-11	5.14703E-11	-2.56294E-11
M	-2.20143E-14	-7.49632E-14	4.35569E-12	4.38355E-12	-2.56294E-11	4.47027E-11

Date of computation: 2025-05-11 12:45 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

2.615

Unit

Source

[5]

Quality

Value

Unit

Source

[5]

Amplitude

Value

0.09

Unit

mag

Source

[5]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Scomp

Unit

Source

[1]

[2]

[3]

Taxonomy (all)

Value

Unit

Source

[1]

[4]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

14.939

Unit

mag

Source

[6]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[6]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.079

0.139

0.148

Unit

Source

[9]

[7]

[8]

Diameter

Value

3700

Unit

Source

[7]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.4564

0.3221

0.7785

Unit

g-r

r-i

g-i

Source

[2]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Visual S

Unit

Source

[1]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Sanchez, J.A. et al. (2013) Icarus 225, 131-140. (Surface composition and taxonomic classification of a group of near-Earth and Mars-crossing asteroids) (,4055,19764,89830, 138404,143381,159609,164121,241662,2007ML13)
[2]	EARN	1.) A. V. Sergeyev, B. Carry et al A&A, 658 (2022) A109
[3]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[4]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[5]	EARN	1.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[6]	ESA Aegis	ESA orbit determination and impact monitoring system
[7]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[8]	EARN	1.) Joseph R. Masiero et al 2020 Planet. Sci. J. 1 5
[9]	EARN	1.) Mainzer, A.; Grav, T.; Masiero, J.; Bauer, J.; et al. (2012) Astrophys. J. Let. 760, L12. 2.) Wolters, S.D. et al. (2012) ACM2012, 6343. (PHYSICAL CHARACTERISATION OF FAST-ROTATING NEAR-EARTH ASTEROIDS) (1866,2102,3554,3838,4957,7482,89830)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

15691

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.386298

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1982-05-25.41464

Unit

Source

[2]

Last Observation

Value

2025-05-10.428822

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

2736 (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

Close Approaches for 89830 2002CE from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1950-10-04 20:05	< 1 min	0.1871405	0.1871384	0.0000007
EARTH	1953-10-06 09:48	< 1 min	0.1489317	0.1489300	0.0000006
EARTH	1956-10-07 02:27	< 1 min	0.1294101	0.1294089	0.0000004
EARTH	1959-10-09 22:44	< 1 min	0.0854019	0.0854013	0.0000002
EARTH	1962-10-10 01:41	< 1 s	0.0775428	0.0775425	0.0000001
EARTH	1965-10-10 05:55	< 1 min	0.0692117	0.0692110	0.0000002
EARTH	1968-10-09 07:18	< 1 min	0.0836633	0.0836621	0.0000004
EARTH	1971-10-10 09:41	< 1 min	0.0767852	0.0767836	0.0000005
EARTH	1974-10-08 20:46	< 1 min	0.1032358	0.1032339	0.0000006
EARTH	1977-10-07 11:01	< 1 min	0.1278760	0.1278741	0.0000006
EARTH	1980-10-05 03:40	< 1 min	0.1715340	0.1715320	0.0000006
EARTH	1983-10-05 02:38	< 1 min	0.1889883	0.1889865	0.0000006

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
356.69868869	278.61027541	0.02853469	MINIMUM
3.89227139	107.75977719	2.02560348	SADDLE
182.36889917	102.58497592	2.13229419	SADDLE
178.64972075	281.03784768	4.12608781	MAXIMUM

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MOID Plots

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