Asteroids

2019CW1 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.851

Aphelion (Q)

1.555

Eccentricity (e)

0.292

Inclination (i)

2.6

deg

Orbit period (P)

482.0

Earth MOID

0.00274

U parameter

7.9

Next Earth close approach

Date

2026-09-12

Nominal distance (from Earth center)

0.03398

5083655

Maximum Brightness

23.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.1

mag

Diameter

6 - 14*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-02-05

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.203081

1-sigma variation

0.000643

Unit

Eccentricity (e)

Value

0.292331

1-sigma variation

0.000610

Unit

Inclination (i)

Value

2.6027

1-sigma variation

0.0060

Unit

Long. of Ascending Node (Ω)

Value

305.6064

1-sigma variation

0.0101

Unit

Arg. of Perihelion (ω)

Value

117.2008

1-sigma variation

0.0256

Unit

Mean Anomaly (M)

Value

245.48029

1-sigma variation

1.70426

Unit

Perihelion distance

Value

0.851383

1-sigma variation

Unit

Aphelion distance

Value

1.554779

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.254127

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.013926

1-sigma variation

Unit

MOID

Value

0.002742

1-sigma variation

Unit

Orbit Period

Value

481.9930

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.13595E-7	3.90051E-7	3.71871E-6	4.14070E-6	-1.09292E-5	-1.09603E-3
e	3.90051E-7	3.71762E-7	3.59836E-6	4.39291E-6	-1.15058E-5	-1.03349E-3
i	3.71871E-6	3.59836E-6	3.55719E-5	4.86374E-5	-1.26253E-4	-9.85117E-3
Ω	4.14070E-6	4.39291E-6	4.86374E-5	1.02397E-4	-2.58897E-4	-1.09545E-2
ω	-1.09292E-5	-1.15058E-5	-1.26253E-4	-2.58897E-4	6.55847E-4	2.89173E-2
M	-1.09603E-3	-1.03349E-3	-9.85117E-3	-1.09545E-2	2.89173E-2	2.90451E0

Date of computation: 2026-07-30 14:25 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

28.14

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

6 - 14*

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

2741

Unit

Source

[1]

Normalized RMS of residuals

Value

0.4086

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-02-05.3473

Unit

Source

[2]

Last Observation

Value

2019-02-07.11332

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

13 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2019CW1 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1963-01-28 04:40	> 1 mo	0.0108631	0.0015572	0.4477571
EARTH	1966-09-04 06:16	> 1 mo	0.0868548	0.0309980	0.4621609
EARTH	1976-02-04 09:28	> 1 w	0.0696330	0.0022107	0.3420159
EARTH	1979-09-11 17:38	> 1 w	0.0324444	0.0316442	0.0273343
EARTH	1992-10-26 05:48	> 1 mo	0.1334662	0.0459564	0.0346113
EARTH	2005-12-20 17:35	> 1 mo	0.1237879	0.0421546	0.0300723
EARTH	2019-01-30 05:55	4.9	0.0061885	0.0061557	0.0000109
EARTH	2022-11-21 18:04	> 1 w	0.1413795	0.1411280	0.0000892
EARTH	2026-09-12 19:29	> 1 d	0.0339821	0.0325582	0.0117873
EARTH	2048-01-29 09:08	> 1 mo	0.0084071	0.0034638	0.3467270
EARTH	2051-09-12 20:21	> 1 mo	0.0316672	0.0310424	1.1670012
MARS	2057-12-07 12:54	> 1 mo	0.0028699	0.0027625	0.2654512
EARTH	2065-01-05 16:37	> 1 mo	0.0984074	0.0134518	633.2347044
EARTH	2068-09-03 05:21	> 1 mo	0.1148472	0.0291515	1175.3269641
EARTH	2081-11-03 21:06	> 1 mo	0.1385138	0.0577083	333.3956999
EARTH	2095-01-31 10:19	> 1 mo	0.0114489	0.0033990	1298.4306441
EARTH	2098-11-01 04:51	> 1 mo	0.1331319	0.0527088	4243.4628487
EARTH	2102-09-03 20:33	> 1 mo	0.1567527	0.0289193	33631.2205425
EARTH	2120-01-22 18:24	> 1 mo	0.0575967	0.0056273	89580.3145491
EARTH	2123-09-30 15:51	> 1 mo	0.0862625	0.0292003	49967.9211510

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
51.56401844	24.27209965	0.00274190	MINIMUM
303.21053704	246.94824900	0.03257962	MINIMUM
356.37909602	314.32869127	0.14181552	SADDLE
178.32648452	136.76495568	0.54475102	SADDLE
357.32248557	135.60498931	1.86330325	SADDLE
178.70647400	317.05889060	2.54205576	MAXIMUM

Download:

MOID Plots

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