Asteroids

2018PN22 help

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

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Aten

Perihelion (q)

0.949

Aphelion (Q)

1.032

Eccentricity (e)

0.042

Inclination (i)

4.4

deg

Orbit period (P)

360.0

Earth MOID

0.01071

U parameter

4.2

Next Earth close approach

Date

2082-07-27

Nominal distance (from Earth center)

0.17593

26318388

Maximum Brightness

26.6

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.4

mag

Diameter

9 - 20*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-08-13

Observatory

Pan-STARRS 1, Haleakala

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

0.990397

1-sigma variation

0.000002

Unit

Eccentricity (e)

Value

0.041858

1-sigma variation

0.000004

Unit

Inclination (i)

Value

4.4290

1-sigma variation

0.0009

Unit

Long. of Ascending Node (Ω)

Value

313.4242

1-sigma variation

0.0018

Unit

Arg. of Perihelion (ω)

Value

210.5262

1-sigma variation

0.0073

Unit

Mean Anomaly (M)

Value

38.51397

1-sigma variation

0.01359

Unit

Perihelion distance

Value

0.948941

1-sigma variation

Unit

Aphelion distance

Value

1.031853

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.011587

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.030855

1-sigma variation

Unit

MOID

Value

0.010715

1-sigma variation

Unit

Orbit Period

Value

360.0083

1-sigma variation

Unit

U parameter

Value

4.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.17340E-12	7.99395E-12	1.58351E-9	3.24699E-9	1.30672E-8	-2.42005E-8
e	7.99395E-12	2.01484E-11	3.99149E-9	8.18816E-9	3.29491E-8	-6.09938E-8
i	1.58351E-9	3.99149E-9	7.90757E-7	1.62227E-6	6.52775E-6	-1.20831E-5
Ω	3.24699E-9	8.18816E-9	1.62227E-6	3.32933E-6	1.33955E-5	-2.47865E-5
ω	1.30672E-8	3.29491E-8	6.52775E-6	1.33955E-5	5.38998E-5	-9.97421E-5
M	-2.42005E-8	-6.09938E-8	-1.20831E-5	-2.47865E-5	-9.97421E-5	1.84644E-4

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

27.363

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 - 20*

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

Unit

Source

[1]

Unobserved

Value

2051

Unit

Source

[1]

Normalized RMS of residuals

Value

0.726224

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-08-07.55143

Unit

Source

[2]

Last Observation

Value

2018-09-07.360313

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (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 2018PN22 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	1950-02-21 23:39	< 1 min	0.1995190	0.1954157	0.0013679
EARTH	2008-09-23 19:46	3.2	0.1524724	0.1518843	0.0001960
EARTH	2009-09-13 22:30	5.7	0.0742523	0.0738416	0.0001370
EARTH	2010-08-30 23:03	11.5	0.0253792	0.0253191	0.0000202
EARTH	2011-08-19 17:34	1.5	0.0278355	0.0278209	0.0000049
EARTH	2012-07-29 03:43	22.2	0.0568191	0.0567311	0.0000294
EARTH	2013-01-30 16:24	22.3	0.0575130	0.0574565	0.0000188
EARTH	2013-06-02 07:40	142.1	0.0852592	0.0851666	0.0000309
EARTH	2014-02-12 05:11	8.2	0.0216434	0.0214852	0.0000527
EARTH	2015-02-11 19:42	4.8	0.0207286	0.0206437	0.0000283
EARTH	2016-02-07 05:03	< 1 min	0.0630414	0.0629054	0.0000453
EARTH	2016-08-21 17:37	7.3	0.0647771	0.0647338	0.0000144
EARTH	2017-08-11 08:29	3.7	0.0240566	0.0240258	0.0000103
EARTH	2018-08-09 08:16	< 1 min	0.0159671	0.0159581	0.0000030
EARTH	2019-08-17 19:21	3.9	0.0438461	0.0438373	0.0000029
EARTH	2020-02-29 18:29	17.1	0.0612948	0.0612227	0.0000241
EARTH	2020-09-14 07:34	12.3	0.0748377	0.0748124	0.0000085
EARTH	2021-02-05 11:14	20.2	0.0326712	0.0326228	0.0000161
EARTH	2022-01-21 23:46	23.7	0.0291305	0.0290967	0.0000113
EARTH	2023-01-04 23:28	21.2	0.0766860	0.0765224	0.0000545
EARTH	2023-12-23 01:53	11.4	0.1550428	0.1548062	0.0000789
EARTH	2082-07-27 09:53	8.7	0.1759276	0.1739743	0.0006511
EARTH	2083-07-27 12:33	1.7	0.0923865	0.0906057	0.0005938
EARTH	2084-07-29 12:11	46.6	0.0256227	0.0245281	0.0003677
EARTH	2085-07-30 11:51	87.2	0.0150835	0.0146490	0.0001524
EARTH	2086-07-25 10:15	151.2	0.0465324	0.0415306	0.0016857
EARTH	2087-07-21 09:11	13.1	0.1153378	0.1087822	0.0021885
EARTH	2088-07-19 08:29	53.4	0.1974855	0.1905833	0.0023017

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