Asteroids

2020TO2 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.807

Aphelion (Q)

2.392

Eccentricity (e)

0.496

Inclination (i)

6.6

deg

Orbit period (P)

738.6

Earth MOID

0.00331

U parameter

8.4

Next Earth close approach

Date

2026-12-07

Nominal distance (from Earth center)

0.19214

28744189

Maximum Brightness

30.6

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.5

mag

Diameter

14 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-10-10

Observatory

Pan-STARRS 1, Haleakala

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

1.599066

1-sigma variation

0.003193

Unit

Eccentricity (e)

Value

0.495566

1-sigma variation

0.000400

Unit

Inclination (i)

Value

6.6084

1-sigma variation

0.2753

Unit

Long. of Ascending Node (Ω)

Value

203.6125

1-sigma variation

0.0701

Unit

Arg. of Perihelion (ω)

Value

243.1935

1-sigma variation

0.3489

Unit

Mean Anomaly (M)

Value

72.32276

1-sigma variation

0.93596

Unit

Perihelion distance

Value

0.806623

1-sigma variation

Unit

Aphelion distance

Value

2.391508

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.550754

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.010545

1-sigma variation

Unit

MOID

Value

0.003312

1-sigma variation

Unit

Orbit Period

Value

738.5806

1-sigma variation

Unit

U parameter

Value

8.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.01924E-5	-1.27735E-6	8.79059E-4	-2.23694E-4	-1.11402E-3	-2.98810E-3
e	-1.27735E-6	1.60084E-7	-1.10167E-4	2.80341E-5	1.39613E-4	3.74480E-4
i	8.79059E-4	-1.10167E-4	7.58155E-2	-1.92927E-2	-9.60797E-2	-2.57713E-1
Ω	-2.23694E-4	2.80341E-5	-1.92927E-2	4.90942E-3	2.44494E-2	6.55800E-2
ω	-1.11402E-3	1.39613E-4	-9.60797E-2	2.44494E-2	1.21761E-1	3.26595E-1
M	-2.98810E-3	3.74480E-4	-2.57713E-1	6.55800E-2	3.26595E-1	8.76018E-1

Date of computation: 2025-07-29 02:36 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

26.454

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

14 - 30*

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

Unit

Source

[1]

Unobserved

Value

1779

Unit

Source

[1]

Normalized RMS of residuals

Value

0.460209

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-10-10.466226

Unit

Source

[2]

Last Observation

Value

2020-10-13.462263

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

37 (2)

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 2020TO2 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	2018-10-06 07:11	920.6	0.1256609	0.0937676	0.0106361
EARTH	2020-10-14 15:06	< 1 min	0.0081508	0.0081354	0.0000051
EARTH	2022-10-16 04:07	1406.5	0.0049798	0.0032369	0.0078328
EARTH	2024-11-04 15:41	> 1 d	0.1262545	0.0644001	0.0212172
EARTH	2026-12-07 08:20	> 1 w	0.1921430	0.1565983	0.0146802
EARTH	2029-01-06 15:12	> 1 mo	0.1924735	0.1509150	0.0231933
EARTH	2031-02-10 23:35	> 1 w	0.1263658	0.0922039	0.0889356
EARTH	2033-02-25 13:27	> 1 w	0.1041534	0.0884031	0.0968975
EARTH	2109-10-04 16:21	> 1 mo	0.1784650	0.0054389	3.7458994
MARS	2110-03-29 17:24	> 1 mo	0.0323659	0.0038338	2.7654164
EARTH	2111-10-14 00:04	> 1 mo	0.0448985	0.0011585	3.6547445
EARTH	2113-10-24 19:02	> 1 mo	0.0663239	0.0031217	1.7513857
EARTH	2115-11-20 13:35	> 1 mo	0.1627084	0.0695420	0.0935385
EARTH	2117-12-17 18:47	> 1 mo	0.1990246	0.1850436	0.1817505
EARTH	2120-01-17 04:56	> 1 mo	0.1839964	0.1065565	1.6093164
EARTH	2122-02-16 09:27	> 1 mo	0.1107707	0.0871148	3.8501469
EARTH	2124-02-28 15:48	> 1 mo	0.1054249	0.0874262	4.9982686

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
319.56520363	280.74421232	0.00331175	MINIMUM
41.20890323	49.87998057	0.09010631	MINIMUM
2.32698466	348.66703353	0.20042468	SADDLE
180.20884498	164.43368343	1.38511207	SADDLE
359.74222351	164.29429115	1.81995041	SADDLE
179.65709458	344.11326035	3.37207492	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2020TO2

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2119-10-17.872	95297.872	-0.734	1.10 ± 0.009	1.77E6	2.70E-7	2.10E-1	-7.56
2119-10-17.964	95297.964	-0.749	0.72 ± 0.003	1.22E5	6.30E-6	2.10E-1	-6.19
2119-10-17.964	95297.964	-0.649	0.78 ± 0.002	1.88E5	3.80E-6	2.10E-1	-6.41
2121-10-17.376	96028.376	-0.223	0.89 ± 0.003	1.74E6	4.81E-7	2.10E-1	-7.32
2121-10-17.397	96028.397	-0.583	1.27 ± 0.002	2.31E5	1.31E-6	2.09E-1	-6.88


Based on 37 optical observations (of which 2 are rejected as outliers) from 2020/10/10.466 to 2020/10/13.462.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.34 and 1.34 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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Download Impactor Table as: