Asteroids

2202 Pele help

Last update: 2025-04-08 00:05 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Amor

Perihelion (q)

1.116

Aphelion (Q)

3.466

Eccentricity (e)

0.513

Inclination (i)

8.7

deg

Orbit period (P)

1266.5

Earth MOID

0.14378

U parameter

0.0

Next Earth close approach

Date

2083-10-08

Nominal distance (from Earth center)

0.14518

21719313

Maximum Brightness

14.4

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

17.1

mag

Diameter

1000 - 2200*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

1972-09-07

Observatory

Lick Observatory, Mount Hamilton

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

2.290877

1-sigma variation

1.561E-9

Unit

Eccentricity (e)

Value

0.512888

1-sigma variation

1.521E-8

Unit

Inclination (i)

Value

8.7426

1-sigma variation

2.677E-6

Unit

Long. of Ascending Node (Ω)

Value

169.8983

1-sigma variation

1.261E-5

Unit

Arg. of Perihelion (ω)

Value

217.9871

1-sigma variation

1.316E-5

Unit

Mean Anomaly (M)

Value

52.70757

1-sigma variation

1.782E-6

Unit

Perihelion distance

Value

1.115914

1-sigma variation

Unit

Aphelion distance

Value

3.465840

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.839919

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.196361

1-sigma variation

Unit

MOID

Value

0.143776

1-sigma variation

Unit

Orbit Period

Value

1266.4880

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.43677E-18	2.01593E-20	-7.40802E-17	2.54800E-16	-9.83523E-16	8.64778E-17
e	2.01593E-20	2.31206E-16	-1.21031E-14	2.95957E-14	-1.21002E-14	2.19388E-15
i	-7.40802E-17	-1.21031E-14	7.16888E-12	-7.10825E-12	6.74690E-12	-6.19054E-13
Ω	2.54800E-16	2.95957E-14	-7.10825E-12	1.58930E-10	-1.55939E-10	1.56786E-12
ω	-9.83523E-16	-1.21002E-14	6.74690E-12	-1.55939E-10	1.73318E-10	-8.52261E-12
M	8.64778E-17	2.19388E-15	-6.19054E-13	1.56786E-12	-8.52261E-12	3.17625E-12

Date of computation: 2025-03-28 15:40 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

17.132

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

1000 - 2200*

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

19190

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.412199

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1972-09-07.34826

Unit

Source

[2]

Last Observation

Value

2025-03-23.122329

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1411 (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

[-]

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 2202 Pele 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	1972-10-07 15:57	< 1 min	0.1502502	0.1502500	0.0000001
107 Camilla	1995-03-23 07:11	< 1 min	0.0142647	0.0142646	0.0000000
EARTH	2083-10-08 16:42	< 1 min	0.1451846	0.1451845	0.0000000

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
352.21740207	272.56018561	0.14377606	MINIMUM
359.14548357	104.64534237	2.11774856	SADDLE
180.00566239	105.06871325	2.46789668	SADDLE
179.32688220	284.68639421	4.45809936	MAXIMUM

Download:

MOID Plots

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