Asteroids

2019CB2 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.693

Aphelion (Q)

1.621

Eccentricity (e)

0.401

Inclination (i)

6.2

deg

Orbit period (P)

454.6

Earth MOID

0.00415

U parameter

6.9

Next Earth close approach

Date

2030-08-23

Nominal distance (from Earth center)

0.04131

6180599

Maximum Brightness

22.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

17 - 40*

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.156977

1-sigma variation

0.000115

Unit

Eccentricity (e)

Value

0.400987

1-sigma variation

0.000122

Unit

Inclination (i)

Value

6.1641

1-sigma variation

0.0021

Unit

Long. of Ascending Node (Ω)

Value

318.7971

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

274.7152

1-sigma variation

0.0003

Unit

Mean Anomaly (M)

Value

113.51315

1-sigma variation

0.32447

Unit

Perihelion distance

Value

0.693045

1-sigma variation

Unit

Aphelion distance

Value

1.620910

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.074408

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.016914

1-sigma variation

Unit

MOID

Value

0.004148

1-sigma variation

Unit

Orbit Period

Value

454.5543

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.32521E-8	1.40720E-8	2.36213E-7	2.06691E-8	-3.20467E-8	-3.73524E-5
e	1.40720E-8	1.49448E-8	2.50836E-7	2.19533E-8	-3.37446E-8	-3.96632E-5
i	2.36213E-7	2.50836E-7	4.21074E-6	3.68422E-7	-5.69994E-7	-6.65791E-4
Ω	2.06691E-8	2.19533E-8	3.68422E-7	3.22638E-8	-4.93158E-8	-5.82578E-5
ω	-3.20467E-8	-3.37446E-8	-5.69994E-7	-4.93158E-8	1.12736E-7	9.03341E-5
M	-3.73524E-5	-3.96632E-5	-6.65791E-4	-5.82578E-5	9.03341E-5	1.05282E-1

Date of computation: 2025-09-10 00:30 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

25.936

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

17 - 40*

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

2413

Unit

Source

[1]

Normalized RMS of residuals

Value

0.50016

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-02-05.3919

Unit

Source

[2]

Last Observation

Value

2019-02-09.45133

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

66 (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

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 2019CB2 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
VENUS	1979-03-30 10:40	> 1 d	0.0495373	0.0492410	0.0029453
EARTH	1980-08-02 21:20	> 1 d	0.1799602	0.1079864	0.0242332
EARTH	1985-08-14 07:20	> 1 d	0.0965590	0.0246656	0.0253974
EARTH	1990-08-19 06:24	> 1 d	0.0277749	0.0161122	0.0175672
EARTH	1995-08-21 04:46	427.1	0.0176535	0.0162444	0.0023115
EARTH	2000-08-24 01:28	544.5	0.0781266	0.0544803	0.0079715
EARTH	2005-08-28 13:31	491.4	0.1646318	0.1404061	0.0080846
EARTH	2009-02-03 17:05	459.4	0.1286460	0.1066090	0.0073460
EARTH	2014-02-07 06:55	368.7	0.0569645	0.0406505	0.0054429
EARTH	2019-02-10 01:19	< 1 s	0.0069818	0.0069754	0.0000021
EARTH	2024-02-04 01:42	338.9	0.1402336	0.1235625	0.0055572
EARTH	2025-08-30 08:16	399.1	0.1748373	0.1557954	0.0063529
EARTH	2030-08-23 22:56	808.7	0.0413147	0.0195264	0.0097393
EARTH	2035-08-18 02:01	813.1	0.0735369	0.0488142	0.0084157
EARTH	2040-07-31 19:32	1368.6	0.1930563	0.1807096	0.0041223
VENUS	2064-02-23 17:54	> 1 d	0.0471317	0.0440219	0.0055727
EARTH	2075-02-15 06:51	> 1 d	0.0857560	0.0060961	0.0270880
EARTH	2080-02-10 02:59	> 1 d	0.0200717	0.0056216	0.0250518
EARTH	2086-08-27 17:10	> 1 d	0.1017677	0.0222804	0.0884511
EARTH	2091-08-18 12:57	> 1 w	0.0768801	0.0213628	0.1582179
EARTH	2116-02-29 14:26	> 1 mo	0.1910027	0.0099921	0.3191313
EARTH	2121-02-11 02:55	> 1 w	0.0100479	0.0061643	0.2492513

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
291.32656800	38.16960810	0.00413688	MINIMUM
71.07461909	226.94711385	0.01889747	MINIMUM
1.74361987	132.97305778	0.33024747	SADDLE
180.73844513	312.20734811	0.64610628	SADDLE
2.10343200	313.55798989	1.67954270	SADDLE
181.04345745	132.41597660	2.62793808	MAXIMUM

Download:

MOID Plots

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