Asteroids

2020BW12 help

Last update: 2024-04-26 16:31 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Aten

Perihelion (q)

0.949

Aphelion (Q)

1.032

Eccentricity (e)

0.042

Inclination (i)

18.8

deg

Orbit period (P)

360.2

Earth MOID

0.01871

U parameter

6.7

Next Earth close approach

Date

2086-01-26

Nominal distance (from Earth center)

0.19007

28434099

Maximum Brightness

25.4

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.2

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-01-26

Observatory

ATLAS-MLO, Mauna Loa

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

0.990708

1-sigma variation

0.000078

Unit

Eccentricity (e)

Value

0.041984

1-sigma variation

0.000011

Unit

Inclination (i)

Value

18.7634

1-sigma variation

0.0156

Unit

Long. of Ascending Node (Ω)

Value

124.1969

1-sigma variation

0.0005

Unit

Arg. of Perihelion (ω)

Value

250.9330

1-sigma variation

0.0809

Unit

Mean Anomaly (M)

Value

188.83894

1-sigma variation

0.27634

Unit

Perihelion distance

Value

0.949114

1-sigma variation

Unit

Aphelion distance

Value

1.032302

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.018819

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.039767

1-sigma variation

Unit

MOID

Value

0.018708

1-sigma variation

Unit

Orbit Period

Value

360.1779

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.06387E-9	8.80186E-10	1.21782E-6	-3.65971E-8	6.29952E-6	-2.15190E-5
e	8.80186E-10	1.30733E-10	1.76870E-7	-5.29599E-9	9.15524E-7	-3.12498E-6
i	1.21782E-6	1.76870E-7	2.44599E-4	-7.34915E-6	1.26515E-3	-4.32170E-3
Ω	-3.65971E-8	-5.29599E-9	-7.34915E-6	2.20976E-7	-3.80132E-5	1.29865E-4
ω	6.29952E-6	9.15524E-7	1.26515E-3	-3.80132E-5	6.54480E-3	-2.23558E-2
M	-2.15190E-5	-3.12498E-6	-4.32170E-3	1.29865E-4	-2.23558E-2	7.63655E-2

Date of computation: 2024-04-23 10:08 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

26.201

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

15 - 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

[-]

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

1548

Unit

Source

[1]

Normalized RMS of residuals

Value

0.756531

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-01-26.416277

Unit

Source

[2]

Last Observation

Value

2020-01-30.3172

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

38 (5)

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 2020BW12 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	1950-01-25 22:40	1016.7	0.1379650	0.0222303	0.0503781
EARTH	1951-01-25 03:14	767.4	0.0612224	0.0190286	0.0430980
EARTH	1951-08-07 13:31	> 1 d	0.1666013	0.0515390	0.0427892
EARTH	1952-01-24 16:06	383.5	0.0217689	0.0177854	0.0206194
EARTH	1952-08-01 13:42	> 1 d	0.0949369	0.0429047	0.0310701
EARTH	1953-01-23 13:22	41.7	0.0903568	0.0194336	0.0334265
EARTH	1953-07-27 10:36	> 1 d	0.0404933	0.0389677	0.0088156
EARTH	1954-01-23 21:38	43.1	0.1647300	0.0693414	0.0326360
EARTH	1954-07-22 08:23	> 1 d	0.0758144	0.0412872	0.0291341
EARTH	1955-07-17 01:09	> 1 d	0.1514278	0.0606663	0.0338743
EARTH	2018-01-26 06:37	20.5	0.1616247	0.1572799	0.0014488
EARTH	2019-01-25 08:08	8.1	0.0791110	0.0769366	0.0007256
EARTH	2019-08-08 12:53	57.0	0.1763489	0.1756314	0.0002392
EARTH	2020-01-24 18:59	< 1 s	0.0181934	0.0181483	0.0000150
EARTH	2020-08-02 00:34	28.0	0.1006520	0.0993920	0.0004218
EARTH	2021-01-23 15:17	2.3	0.0777843	0.0756550	0.0007107
EARTH	2021-07-27 23:10	124.8	0.0429197	0.0418766	0.0003972
EARTH	2022-01-23 23:03	9.5	0.1511289	0.1467694	0.0014543
EARTH	2022-07-22 23:23	219.6	0.0684769	0.0633540	0.0017379
EARTH	2023-07-17 17:34	270.8	0.1419244	0.1338381	0.0027034
EARTH	2086-01-26 17:36	768.9	0.1900702	0.0705071	0.0404533
EARTH	2087-01-25 16:56	690.9	0.1066422	0.0208529	0.0391134
EARTH	2087-08-10 04:41	> 1 d	0.1970916	0.0920087	0.0369672
EARTH	2088-01-25 01:08	483.9	0.0316461	0.0186485	0.0302550
EARTH	2088-08-03 19:46	> 1 d	0.1256054	0.0405231	0.0344312
EARTH	2089-01-23 19:11	232.0	0.0464613	0.0190808	0.0277091
EARTH	2089-07-30 04:41	> 1 d	0.0629024	0.0352347	0.0222235
EARTH	2090-01-23 22:47	8.7	0.1147033	0.0588291	0.0189724
EARTH	2090-07-25 13:39	> 1 d	0.0429897	0.0406429	0.0051859
EARTH	2091-01-24 06:19	26.2	0.1858549	0.1579957	0.0093105
EARTH	2091-07-20 15:04	326.3	0.1025492	0.0882734	0.0051023
EARTH	2092-07-14 11:13	598.1	0.1789798	0.1692263	0.0032579

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