Asteroids

2019CO1 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.945

Aphelion (Q)

1.270

Eccentricity (e)

0.147

Inclination (i)

17.9

deg

Orbit period (P)

425.8

Earth MOID

0.00604

U parameter

7.4

Next Earth close approach

Date

2032-08-03

Nominal distance (from Earth center)

0.14186

21221416

Maximum Brightness

22.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.8

mag

Diameter

50 - 100*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-02-04

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.107673

1-sigma variation

0.000286

Unit

Eccentricity (e)

Value

0.146608

1-sigma variation

0.000173

Unit

Inclination (i)

Value

17.9215

1-sigma variation

0.0295

Unit

Long. of Ascending Node (Ω)

Value

319.2088

1-sigma variation

0.0025

Unit

Arg. of Perihelion (ω)

Value

58.4073

1-sigma variation

0.0300

Unit

Mean Anomaly (M)

Value

233.68977

1-sigma variation

0.80070

Unit

Perihelion distance

Value

0.945280

1-sigma variation

Unit

Aphelion distance

Value

1.270067

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.006388

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.187238

1-sigma variation

Unit

MOID

Value

0.006040

1-sigma variation

Unit

Orbit Period

Value

425.8101

1-sigma variation

Unit

U parameter

Value

7.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.16503E-8	4.94143E-8	8.43236E-6	7.02251E-7	8.56566E-6	-2.28795E-4
e	4.94143E-8	2.99201E-8	5.10283E-6	4.24936E-7	5.18753E-6	-1.38471E-4
i	8.43236E-6	5.10283E-6	8.71004E-4	7.25405E-5	8.83986E-4	-2.36279E-2
Ω	7.02251E-7	4.24936E-7	7.25405E-5	6.04167E-6	7.36023E-5	-1.96772E-3
ω	8.56566E-6	5.18753E-6	8.83986E-4	7.36023E-5	9.01440E-4	-2.40058E-2
M	-2.28795E-4	-1.38471E-4	-2.36279E-2	-1.96772E-3	-2.40058E-2	6.41120E-1

Date of computation: 2025-07-29 02:36 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

23.798

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

50 - 100*

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

2381

Unit

Source

[1]

Normalized RMS of residuals

Value

0.727646

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-02-04.42589

Unit

Source

[2]

Last Observation

Value

2019-02-23.12959

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

40 (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

[-]

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 2019CO1 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	1970-08-09 23:42	> 1 d	0.0305968	0.0073133	0.0553624
EARTH	1971-02-04 03:35	> 1 d	0.1990959	0.1845183	0.0193958
EARTH	1977-08-17 11:56	> 1 d	0.0915525	0.0112578	0.0653937
EARTH	1978-01-26 12:07	> 1 d	0.1740953	0.1739359	0.0025205
EARTH	2011-08-02 23:51	1067.6	0.1570999	0.1088225	0.0161323
EARTH	2018-08-11 04:07	9.2	0.0132364	0.0125632	0.0002375
EARTH	2019-02-03 14:43	4.0	0.1905972	0.1897668	0.0002768
EARTH	2025-08-08 20:18	1401.1	0.0466366	0.0068762	0.0162576
EARTH	2032-08-03 04:04	1012.5	0.1418564	0.1011063	0.0136040
EARTH	2075-08-22 11:40	> 1 d	0.1545130	0.0995931	0.0183841
EARTH	2076-01-24 16:24	> 1 d	0.1709531	0.1678204	0.0034228
EARTH	2082-08-16 08:38	> 1 d	0.0704842	0.0086469	0.0221745
EARTH	2083-01-29 06:21	> 1 d	0.1704404	0.1687038	0.0029172
EARTH	2089-08-12 18:03	> 1 d	0.0181002	0.0059024	0.0155206
EARTH	2090-01-31 20:48	1035.8	0.1830240	0.1677607	0.0054873
EARTH	2096-08-17 00:38	> 1 d	0.0879863	0.0102440	0.0880392
EARTH	2097-01-26 18:42	> 1 w	0.1725865	0.1725389	0.0017520
EARTH	2103-08-25 19:03	> 1 w	0.1840689	0.0268554	0.1692330
EARTH	2104-01-22 22:49	> 1 w	0.1850439	0.1754256	0.0532832

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
308.18646423	217.20358461	0.00604013	MINIMUM
99.71023278	23.61126980	0.16867949	MINIMUM
27.70174760	308.09454124	0.30544541	SADDLE
203.11248551	114.10017227	0.42479464	SADDLE
1.74048324	97.18114879	1.92927214	SADDLE
166.55575668	261.59083693	2.25344976	MAXIMUM

Download:

MOID Plots

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