Asteroids

2020UY1 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.958

Aphelion (Q)

1.146

Eccentricity (e)

0.089

Inclination (i)

16.8

deg

Orbit period (P)

394.0

Earth MOID

0.01240

U parameter

8.2

Next Earth close approach

Date

2034-10-15

Nominal distance (from Earth center)

0.16928

25323444

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.7

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-10-17

Observatory

Mt. Lemmon Survey

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.051787

1-sigma variation

0.000894

Unit

Eccentricity (e)

Value

0.089158

1-sigma variation

0.000338

Unit

Inclination (i)

Value

16.8095

1-sigma variation

0.1140

Unit

Long. of Ascending Node (Ω)

Value

26.8562

1-sigma variation

0.0052

Unit

Arg. of Perihelion (ω)

Value

106.2912

1-sigma variation

0.2888

Unit

Mean Anomaly (M)

Value

160.27384

1-sigma variation

1.82503

Unit

Perihelion distance

Value

0.958012

1-sigma variation

Unit

Aphelion distance

Value

1.145562

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.074263

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.012746

1-sigma variation

Unit

MOID

Value

0.012401

1-sigma variation

Unit

Orbit Period

Value

393.9943

1-sigma variation

Unit

U parameter

Value

8.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.98696E-7	3.01029E-7	1.01821E-4	-4.60646E-6	-2.58070E-4	-1.63101E-3
e	3.01029E-7	1.13966E-7	3.83256E-5	-1.73310E-6	-9.74045E-5	-6.14520E-4
i	1.01821E-4	3.83256E-5	1.29864E-2	-5.87598E-4	-3.28840E-2	-2.07950E-1
Ω	-4.60646E-6	-1.73310E-6	-5.87598E-4	2.65886E-5	1.48748E-3	9.40816E-3
ω	-2.58070E-4	-9.74045E-5	-3.28840E-2	1.48748E-3	8.34291E-2	5.26940E-1
M	-1.63101E-3	-6.14520E-4	-2.07950E-1	9.40816E-3	5.26940E-1	3.33075E0

Date of computation: 2025-09-10 00:30 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

25.736

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

19 - 40*

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 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

1835

Unit

Source

[1]

Normalized RMS of residuals

Value

0.530554

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-10-17.279204

Unit

Source

[2]

Last Observation

Value

2020-10-21.240691

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

17 (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

[-]

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 2020UY1 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	1953-10-23 07:09	> 1 w	0.0782285	0.0761837	0.1033140
EARTH	1954-04-15 10:21	> 1 w	0.0452283	0.0141221	0.4760582
EARTH	1966-10-27 17:19	> 1 d	0.1485925	0.0824902	0.3602087
EARTH	1980-10-14 09:07	> 1 w	0.1698911	0.1029703	0.1521827
EARTH	1981-04-19 19:55	> 1 d	0.1081408	0.0114463	0.1982681
EARTH	1993-10-22 15:40	> 1 w	0.0809668	0.0747330	0.0610020
EARTH	1994-04-15 18:26	> 1 d	0.0339428	0.0135312	0.1566424
EARTH	2020-10-22 12:20	2.6	0.0779391	0.0764217	0.0005058
EARTH	2021-04-15 08:00	59.3	0.0407550	0.0368448	0.0014239
EARTH	2034-10-15 02:10	> 1 w	0.1692768	0.0942770	0.0871111
EARTH	2035-04-20 01:37	> 1 d	0.1036632	0.0123186	0.1112433
EARTH	2047-10-27 09:50	> 1 d	0.1346981	0.0790451	0.1063747
EARTH	2048-04-12 08:48	1185.7	0.1893878	0.0168446	0.1307636
EARTH	2061-10-22 03:32	> 1 d	0.0821344	0.0741339	0.0408790
EARTH	2062-04-15 21:39	> 1 d	0.0295605	0.0139290	0.0855215
EARTH	2075-10-21 01:12	> 1 w	0.0992214	0.0727193	0.1517263
EARTH	2076-04-16 05:56	> 1 d	0.0150862	0.0140423	0.0860858
EARTH	2102-10-25 16:37	> 1 mo	0.0754751	0.0735160	1.5121942
EARTH	2103-04-15 18:02	> 1 mo	0.0837918	0.0141326	6.8973212
EARTH	2116-10-19 09:05	> 1 mo	0.1240504	0.0819989	6.3043005
EARTH	2117-04-18 18:41	> 1 mo	0.0495813	0.0134975	8.3890267

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
68.26557591	103.12603658	0.01374813	MINIMUM
262.36931428	288.90327935	0.07204734	MINIMUM
344.99395849	14.25423500	0.28532268	SADDLE
165.21683104	197.75318033	0.33924426	SADDLE
358.48741662	209.35893893	1.95238334	SADDLE
199.55757902	50.62775731	2.11419661	MAXIMUM

Download:

MOID Plots

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