Asteroids

2021PJ10 help

Last update: 2024-04-19 00:31 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Amor

Perihelion (q)

1.150

Aphelion (Q)

3.109

Eccentricity (e)

0.460

Inclination (i)

24.4

deg

Orbit period (P)

1135.1

Earth MOID

0.17257

U parameter

8.0

Next Earth close approach

Date

2080-08-28

Nominal distance (from Earth center)

0.17046

25500891

Maximum Brightness

19.3

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

21.9

mag

Diameter

110 - 250*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-08-12

Observatory

Pan-STARRS 1, Haleakala

Orbit Visualiser

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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

2.129531

1-sigma variation

0.003607

Unit

Eccentricity (e)

Value

0.460064

1-sigma variation

0.000831

Unit

Inclination (i)

Value

24.3795

1-sigma variation

0.0205

Unit

Long. of Ascending Node (Ω)

Value

329.0905

1-sigma variation

0.0083

Unit

Arg. of Perihelion (ω)

Value

27.6074

1-sigma variation

0.0128

Unit

Mean Anomaly (M)

Value

295.79109

1-sigma variation

0.74585

Unit

Perihelion distance

Value

1.149811

1-sigma variation

Unit

Aphelion distance

Value

3.109251

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.181528

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.846408

1-sigma variation

Unit

MOID

Value

0.172566

1-sigma variation

Unit

Orbit Period

Value

1135.0745

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.30094E-5	2.99775E-6	7.39440E-5	2.97756E-5	-4.58421E-5	-2.69018E-3
e	2.99775E-6	6.90772E-7	1.70389E-5	6.86118E-6	-1.05635E-5	-6.19899E-4
i	7.39440E-5	1.70389E-5	4.20426E-4	1.69316E-4	-2.60018E-4	-1.52909E-2
Ω	2.97756E-5	6.86118E-6	1.69316E-4	6.81920E-5	-1.04612E-4	-6.15736E-3
ω	-4.58421E-5	-1.05635E-5	-2.60018E-4	-1.04612E-4	1.63904E-4	9.47877E-3
M	-2.69018E-3	-6.19899E-4	-1.52909E-2	-6.15736E-3	9.47877E-3	5.56298E-1

Date of computation: 2024-02-21 14:29 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

21.908

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

110 - 250*

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 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

Unit

Source

[1]

Unobserved

Value

960

Unit

Source

[1]

Normalized RMS of residuals

Value

0.441302

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-08-12.554914

Unit

Source

[2]

Last Observation

Value

2021-09-02.07951

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

[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 2021PJ10 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	1993-08-30 00:09	> 1 w	0.1930976	0.1678117	0.2191774
EARTH	2080-08-28 06:24	> 1 w	0.1704629	0.1681591	0.1388111

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