Asteroids

2021WV1 help

Last update: 2024-04-24 23:53 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.941

Aphelion (Q)

1.163

Eccentricity (e)

0.106

Inclination (i)

1.8

deg

Orbit period (P)

394.1

Earth MOID

0.00167

U parameter

6.1

Next Earth close approach

Date

2035-10-03

Nominal distance (from Earth center)

0.12403

18554419

Maximum Brightness

25.3

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

28.5

mag

Diameter

5 - 12*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-11-27

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

1.051921

1-sigma variation

0.000040

Unit

Eccentricity (e)

Value

0.105740

1-sigma variation

0.000036

Unit

Inclination (i)

Value

1.7880

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

82.4856

1-sigma variation

0.0013

Unit

Arg. of Perihelion (ω)

Value

53.8078

1-sigma variation

0.0090

Unit

Mean Anomaly (M)

Value

0.96020

1-sigma variation

0.03462

Unit

Perihelion distance

Value

0.940690

1-sigma variation

Unit

Aphelion distance

Value

1.163151

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.004382

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.093528

1-sigma variation

Unit

MOID

Value

0.001667

1-sigma variation

Unit

Orbit Period

Value

394.0697

1-sigma variation

Unit

U parameter

Value

6.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.63271E-9	1.45632E-9	5.23692E-9	5.36404E-8	-3.64393E-7	-1.39899E-6
e	1.45632E-9	1.29939E-9	4.68334E-9	4.77572E-8	-3.24775E-7	-1.24796E-6
i	5.23692E-9	4.68334E-9	1.71807E-8	1.69277E-7	-1.16101E-6	-4.49060E-6
Ω	5.36404E-8	4.77572E-8	1.69277E-7	1.78299E-6	-1.20283E-5	-4.59380E-5
ω	-3.64393E-7	-3.24775E-7	-1.16101E-6	-1.20283E-5	8.14856E-5	3.12163E-4
M	-1.39899E-6	-1.24796E-6	-4.49060E-6	-4.59380E-5	3.12163E-4	1.19876E-3

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

28.452

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

5 - 12*

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 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

870

Unit

Source

[1]

Normalized RMS of residuals

Value

0.666661

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-11-27.459296

Unit

Source

[2]

Last Observation

Value

2021-12-07.14917

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

45 (1)

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 2021WV1 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	1953-12-11 06:39	> 1 mo	0.0122265	0.0022888	0.8837076
EARTH	1954-04-28 13:15	> 1 mo	0.1286531	0.0430150	0.5994918
EARTH	1976-01-27 10:22	> 1 mo	0.0296453	0.0291654	0.0071984
EARTH	1997-10-01 14:01	> 1 mo	0.1652069	0.0067153	0.1499090
EARTH	1998-03-21 01:42	> 1 w	0.0807707	0.0213780	0.3269139
EARTH	2004-12-10 06:36	1289.3	0.0090358	0.0016993	0.0032270
EARTH	2005-05-14 08:06	> 1 d	0.1295006	0.1238981	0.0018759
EARTH	2021-12-11 01:38	< 1 min	0.0038608	0.0038574	0.0000011
EARTH	2022-07-01 00:26	223.5	0.1278157	0.1277052	0.0000369
EARTH	2035-10-03 23:60	> 1 d	0.1240286	0.1184327	0.0018653
EARTH	2036-04-14 12:17	> 1 d	0.0318139	0.0256382	0.0028912
EARTH	2049-09-07 03:01	> 1 mo	0.1438179	0.1209134	0.0077055
EARTH	2050-04-24 02:01	> 1 d	0.0619420	0.0250190	0.0411141
EARTH	2062-12-23 08:16	> 1 mo	0.0279282	0.0040500	0.0929476
EARTH	2063-06-09 10:33	> 1 mo	0.1136331	0.0150963	0.0456913
EARTH	2075-09-18 23:13	> 1 mo	0.1403478	0.0116623	0.4282486
EARTH	2076-04-17 00:31	> 1 mo	0.0415187	0.0261490	1.2282039
EARTH	2087-10-09 09:10	> 1 mo	0.1240942	0.0154620	2.3758869
EARTH	2088-04-09 06:10	> 1 mo	0.0297430	0.0263608	2.4335837
EARTH	2099-10-26 21:30	> 1 mo	0.1029856	0.0262413	46.7158162
EARTH	2100-03-01 03:44	> 1 mo	0.0490121	0.0371764	16.5044472
EARTH	2111-12-17 03:58	> 1 mo	0.0207108	0.0014478	31.4266856
EARTH	2112-05-28 22:37	> 1 mo	0.1144547	0.0097487	15.0252685
EARTH	2122-11-23 09:16	> 1 mo	0.1683314	0.0015660	788.7195257
EARTH	2123-07-22 09:01	> 1 mo	0.1655871	0.1419545	73.2818607

Download as:

2021WV1

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2048-12-09.878	69419.878	3.122	2.53 ± 0.001	1.95E3	1.11E-5	6.89E-8	-6.61
2062-12-07.601	74530.601	4.080	1.52 ± 0.003	2.33E5	3.38E-9	2.11E-11	-10.31
2064-12-08.952	75262.952	2.976	4.23 ± 0.000	2.37E5	7.35E-8	4.58E-10	-8.99
2071-12-08.013	77818.013	3.968	1.62 ± 0.000	6.82E6	1.77E-10	1.10E-12	-11.68
2076-12-07.639	79644.639	-3.113	0.61 ± 0.002	4.68E3	5.71E-6	3.56E-8	-7.21
2081-06-01.872	81281.872	-0.831	1.43 ± 0.041	2.70E6	8.60E-7	5.36E-9	-8.07
2083-12-09.471	82202.471	0.496	4.20 ± 0.002	3.20E5	2.33E-6	1.46E-8	-7.66
2085-12-08.255	82932.255	3.381	3.33 ± 0.001	8.06E4	9.01E-8	5.62E-10	-9.08
2085-12-08.542	82932.542	1.569	1.96 ± 0.001	2.00E5	4.46E-6	2.79E-8	-7.39
2085-12-08.880	82932.880	0.159	1.50 ± 0.011	8.63E5	3.66E-6	2.29E-8	-7.47
2087-06-01.498	83472.498	1.185	1.67 ± 0.000	4.87E8	3.23E-9	2.02E-11	-10.53
2090-12-06.141	84756.141	1.191	3.68 ± 0.000	6.98E6	1.30E-7	8.09E-10	-8.96
2091-12-07.309	85122.309	-2.244	1.53 ± 0.219	2.10E7	1.22E-8	7.63E-11	-9.99
2091-12-08.417	85123.417	0.303	1.05 ± 0.000	2.95E7	1.08E-7	6.72E-10	-9.04
2095-12-07.132	86583.132	3.897	3.55 ± 0.000	1.47E6	6.90E-10	4.30E-12	-11.26
2095-12-07.600	86583.600	-3.307	1.49 ± 0.001	1.96E5	6.95E-8	4.33E-10	-9.26
2096-12-06.661	86948.661	3.387	1.75 ± 0.032	1.12E7	8.98E-10	5.60E-12	-11.15
2096-12-07.016	86949.016	-3.279	2.29 ± 0.001	2.81E5	4.80E-8	3.00E-10	-9.42
2096-12-07.932	86949.932	-0.321	2.94 ± 0.022	7.36E6	3.31E-7	2.07E-9	-8.59
2098-12-07.310	87679.310	3.737	1.43 ± 0.004	2.68E5	1.12E-8	7.01E-11	-10.07
2098-12-08.257	87680.257	-0.236	1.66 ± 0.002	2.32E5	1.33E-5	8.31E-8	-6.99
2099-12-07.194	88044.194	1.432	3.28 ± 0.008	8.63E5	1.20E-6	7.49E-9	-8.04
2099-12-07.374	88044.374	-2.944	3.18 ± 0.006	6.39E4	5.61E-7	3.50E-9	-8.37
2099-12-07.451	88044.451	0.263	1.53 ± 0.003	1.96E6	1.58E-6	9.88E-9	-7.92
2103-12-07.707	89504.707	-0.787	4.25 ± 0.000	5.21E7	2.00E-8	1.25E-10	-9.84
2105-12-06.985	90234.985	1.377	2.68 ± 0.127	2.16E7	4.86E-8	3.03E-10	-9.47
2105-12-07.587	90235.587	4.137	1.09 ± 0.000	4.45E6	1.43E-10	8.95E-13	-12.00
2105-12-09.334	90237.334	1.154	2.19 ± 0.088	7.56E5	2.19E-6	1.37E-8	-7.81
2105-12-09.494	90237.494	0.479	1.94 ± 0.012	3.55E5	7.90E-6	4.93E-8	-7.26
2107-12-07.147	90965.147	-0.293	4.26 ± 0.000	3.47E8	2.32E-9	1.45E-11	-10.80
2107-12-08.555	90966.555	0.367	2.19 ± 0.000	2.23E7	1.39E-7	8.66E-10	-9.02
2110-12-08.395	92062.395	1.570	1.84 ± 0.506	3.09E8	2.91E-9	1.81E-11	-10.72
2111-08-01.393	92298.393	-0.835	0.16 ± 0.506	1.73E8	1.39E-8	8.70E-11	-10.04
2111-12-08.018	92427.018	0.392	4.31 ± 0.000	1.41E8	4.79E-9	2.99E-11	-10.51
2111-12-08.621	92427.621	-3.417	1.53 ± 0.000	6.30E6	1.49E-9	9.30E-12	-11.01
2112-12-07.653	92792.653	-0.163	4.01 ± 0.005	2.06E5	1.17E-5	7.27E-8	-7.12
2113-12-06.080	93156.080	-3.037	0.98 ± 0.000	6.45E6	5.14E-9	3.21E-11	-10.48
2114-12-08.629	93523.629	0.322	3.40 ± 0.000	5.95E7	3.44E-8	2.15E-10	-9.66
2115-06-02.421	93699.421	1.259	1.17 ± 0.127	9.96E7	1.52E-8	9.46E-11	-10.02
2115-12-05.981	93885.981	-1.510	3.97 ± 0.000	1.47E7	3.18E-8	1.98E-10	-9.70
2115-12-07.276	93887.276	1.385	1.53 ± 0.877	1.36E8	8.68E-9	5.42E-11	-10.27
2116-05-30.758	94062.758	-0.878	3.38 ± 0.089	6.57E7	2.41E-8	1.51E-10	-9.82
2116-06-01.629	94064.629	0.686	1.94 ± 0.000	2.11E8	1.17E-8	7.29E-11	-10.14
2116-12-04.810	94250.810	0.677	1.00 ± 3.507	3.66E8	4.68E-9	2.92E-11	-10.54
2119-12-07.579	95348.579	0.313	2.32 ± 0.000	1.03E8	2.70E-8	1.69E-10	-9.79
2120-12-06.457	95713.457	0.380	2.85 ± 0.127	4.42E7	5.88E-8	3.67E-10	-9.46


Based on 45 optical observations (of which 1 are rejected as outliers) from 2021/11/27.459 to 2021/12/07.149.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 4.29 and 4.29 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20240110 090431.315 UTC.

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