Asteroids

2020YB help

Last update: 2024-04-18 21:05 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Aten

Perihelion (q)

0.778

Aphelion (Q)

1.090

Eccentricity (e)

0.167

Inclination (i)

1.0

deg

Orbit period (P)

329.9

Earth MOID

0.00290

U parameter

5.8

Next Earth close approach

Date

2029-07-07

Nominal distance (from Earth center)

0.15644

23403795

Maximum Brightness

31.4

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

28.9

mag

Diameter

4 - 10*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-12-16

Observatory

Mt. Lemmon Survey

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

0.934336

1-sigma variation

0.000018

Unit

Eccentricity (e)

Value

0.166806

1-sigma variation

0.000050

Unit

Inclination (i)

Value

0.9834

1-sigma variation

0.0004

Unit

Long. of Ascending Node (Ω)

Value

80.5259

1-sigma variation

0.0015

Unit

Arg. of Perihelion (ω)

Value

126.7859

1-sigma variation

0.0028

Unit

Mean Anomaly (M)

Value

124.68933

1-sigma variation

0.03877

Unit

Perihelion distance

Value

0.778483

1-sigma variation

Unit

Aphelion distance

Value

1.090189

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.025974

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.190024

1-sigma variation

Unit

MOID

Value

0.002899

1-sigma variation

Unit

Orbit Period

Value

329.8778

1-sigma variation

Unit

U parameter

Value

5.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.25808E-10	-9.05488E-10	-7.71786E-9	-2.62378E-8	-5.02060E-8	-6.99876E-7
e	-9.05488E-10	2.51855E-9	2.14554E-8	7.29175E-8	1.39420E-7	1.94546E-6
i	-7.71786E-9	2.14554E-8	1.82909E-7	6.21951E-7	1.18854E-6	1.65799E-5
Ω	-2.62378E-8	7.29175E-8	6.21951E-7	2.11588E-6	4.04044E-6	5.63615E-5
ω	-5.02060E-8	1.39420E-7	1.18854E-6	4.04044E-6	7.74577E-6	1.07829E-4
M	-6.99876E-7	1.94546E-6	1.65799E-5	5.63615E-5	1.07829E-4	1.50348E-3

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

28.881

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

4 - 10*

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

1215

Unit

Source

[1]

Normalized RMS of residuals

Value

0.508081

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-12-16.269479

Unit

Source

[2]

Last Observation

Value

2020-12-21.090101

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

55 (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 2020YB 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	1955-09-07 03:53	182.4	0.0255975	0.0240007	0.0005638
EARTH	1963-07-27 12:21	> 1 d	0.1478719	0.1443300	0.0011819
EARTH	1963-10-21 11:12	> 1 d	0.0859803	0.0855510	0.0001435
EARTH	1964-02-20 05:22	> 1 d	0.1743486	0.1715510	0.0009325
EARTH	1971-12-07 07:25	1062.0	0.0566244	0.0534024	0.0010741
EARTH	1979-12-19 04:47	204.2	0.0274285	0.0255058	0.0006411
EARTH	1987-07-09 22:19	985.7	0.1673323	0.1662874	0.0003485
EARTH	1987-10-29 16:40	761.4	0.0910662	0.0908171	0.0000831
EARTH	1988-02-14 01:12	1364.4	0.1639597	0.1624141	0.0005152
EARTH	1995-09-05 21:51	498.7	0.0336417	0.0295731	0.0014096
EARTH	2003-09-02 07:42	62.7	0.0251717	0.0229637	0.0008017
EARTH	2011-09-04 12:34	32.7	0.1684135	0.1655196	0.0009648
EARTH	2012-12-20 14:08	36.4	0.1569622	0.1538361	0.0010421
EARTH	2020-12-21 08:08	< 1 min	0.0060068	0.0060017	0.0000017
EARTH	2029-07-07 18:14	> 1 d	0.1564447	0.1534636	0.0009943
EARTH	2029-10-17 17:03	> 1 d	0.0951695	0.0946045	0.0001886
EARTH	2030-02-24 10:54	> 1 d	0.1763297	0.1743791	0.0006502
EARTH	2038-08-27 05:28	44.4	0.0272977	0.0222534	0.0018144
EARTH	2039-12-19 19:56	13.2	0.1988643	0.1955429	0.0011072
EARTH	2048-06-18 16:12	> 1 d	0.1829703	0.1758033	0.0023949
EARTH	2048-11-06 16:35	> 1 d	0.0940036	0.0900885	0.0013076
EARTH	2049-02-07 23:49	> 1 w	0.1485579	0.1362035	0.0041183
EARTH	2057-08-28 02:38	354.4	0.1148988	0.0865730	0.0094743
EARTH	2058-12-22 18:05	344.7	0.1028847	0.0737883	0.0097034
EARTH	2067-07-23 03:16	> 1 d	0.1374647	0.1285086	0.0029922
EARTH	2067-10-08 08:27	> 1 d	0.0908231	0.0879238	0.0009680
EARTH	2068-03-05 18:24	> 1 d	0.1873671	0.1828348	0.0015108
EARTH	2076-08-30 06:29	59.4	0.1840332	0.1827795	0.0004179
EARTH	2077-12-23 15:06	34.2	0.0344647	0.0336983	0.0002562
EARTH	2086-06-25 16:35	> 1 d	0.1766178	0.1703355	0.0020961
EARTH	2086-11-02 18:29	> 1 d	0.0945884	0.0931337	0.0004889
EARTH	2087-02-13 05:12	> 1 d	0.1563083	0.1487886	0.0025066
EARTH	2095-08-29 00:01	462.1	0.0174532	0.0165022	0.0024109
EARTH	2105-06-18 22:16	> 1 mo	0.1859238	0.0815020	0.0371599
EARTH	2105-11-11 19:40	> 1 mo	0.0919519	0.0355499	0.0240662
EARTH	2106-02-06 07:54	> 1 mo	0.1432449	0.0017172	0.0694294
EARTH	2114-08-31 05:19	> 1 d	0.1398021	0.0165514	0.2101417
EARTH	2115-12-26 00:11	> 1 d	0.0717214	0.0058479	0.2424369
EARTH	2124-10-04 06:50	> 1 mo	0.0867794	0.0334608	0.0200587

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