Asteroids

2016CH30 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.767

Aphelion (Q)

1.101

Eccentricity (e)

0.179

Inclination (i)

0.5

deg

Orbit period (P)

329.8

Earth MOID

0.00390

U parameter

0.8

Next Earth close approach

Date

2033-08-10

Nominal distance (from Earth center)

0.19031

28470207

Maximum Brightness

32.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

7 - 15*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2016-02-03

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

0.934202

1-sigma variation

9.816E-9

Unit

Eccentricity (e)

Value

0.178687

1-sigma variation

4.556E-7

Unit

Inclination (i)

Value

0.4852

1-sigma variation

2.619E-6

Unit

Long. of Ascending Node (Ω)

Value

345.8263

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

270.3048

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

210.80647

1-sigma variation

0.00006

Unit

Perihelion distance

Value

0.767272

1-sigma variation

Unit

Aphelion distance

Value

1.101133

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.104422

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.088047

1-sigma variation

Unit

MOID

Value

0.003898

1-sigma variation

Unit

Orbit Period

Value

329.8071

1-sigma variation

Unit

U parameter

Value

0.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.63496E-17	4.46922E-15	1.68284E-14	-7.32498E-13	5.55687E-13	5.82224E-13
e	4.46922E-15	2.07608E-13	7.76003E-13	-3.29324E-11	2.47645E-11	2.69741E-11
i	1.68284E-14	7.76003E-13	6.85885E-12	-4.35860E-10	4.02935E-10	1.03922E-10
Ω	-7.32498E-13	-3.29324E-11	-4.35860E-10	3.31293E-8	-3.14889E-8	-4.72325E-9
ω	5.55687E-13	2.47645E-11	4.02935E-10	-3.14889E-8	3.01816E-8	3.64696E-9
M	5.82224E-13	2.69741E-11	1.03922E-10	-4.72325E-9	3.64696E-9	3.52556E-9

Date of computation: 2025-11-24 16:53 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

27.973

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

7 - 15*

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

3293

Unit

Source

[1]

Unobserved

Value

322

Unit

Source

[1]

Normalized RMS of residuals

Value

0.653668

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2016-01-17.25169

Unit

Source

[2]

Last Observation

Value

2025-01-22.502722

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

45 (2)

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 2016CH30 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	1953-08-07 12:20	> 1 mo	0.1968223	0.0625543	0.0461862
EARTH	1953-12-13 11:55	> 1 mo	0.1087017	0.0997657	0.0033814
EARTH	1954-03-31 03:36	> 1 mo	0.1799850	0.0350261	0.0483697
VENUS	1957-01-22 10:05	> 1 d	0.0374599	0.0372123	0.0031391
EARTH	1961-10-12 12:03	1072.0	0.1167977	0.0372199	0.0267600
EARTH	1963-02-03 16:48	743.3	0.1169097	0.0489409	0.0226741
VENUS	1966-11-28 09:23	> 1 d	0.0404591	0.0334745	0.0042844
EARTH	1970-08-25 10:09	> 1 w	0.1684404	0.1555455	0.0043019
EARTH	1970-11-27 01:34	> 1 d	0.1069826	0.1032777	0.0012368
EARTH	1980-02-05 07:35	1.7	0.0038734	0.0038569	0.0000058
EARTH	1987-10-12 11:10	< 1 min	0.1390436	0.1389747	0.0000229
VENUS	1988-06-10 06:48	3.5	0.0408633	0.0408405	0.0000076
EARTH	1989-02-05 11:57	< 1 min	0.0511094	0.0510365	0.0000243
EARTH	1996-10-10 12:48	< 1 min	0.0599523	0.0598857	0.0000222
EARTH	1998-02-04 09:46	< 1 min	0.1292625	0.1292112	0.0000171
VENUS	2000-02-17 05:05	1.3	0.0385848	0.0385831	0.0000006
EARTH	2005-10-11 01:19	< 1 min	0.0263072	0.0263024	0.0000016
EARTH	2007-02-05 18:43	< 1 min	0.1406996	0.1406965	0.0000011
EARTH	2014-10-14 14:02	< 1 min	0.1675185	0.1675136	0.0000016
EARTH	2016-02-07 22:31	< 1 s	0.0038619	0.0038619	0.0000000
EARTH	2025-01-30 11:52	< 1 min	0.0547995	0.0547990	0.0000002
EARTH	2033-08-10 18:09	< 1 min	0.1903116	0.1903102	0.0000004
EARTH	2033-12-08 05:42	< 1 min	0.1159229	0.1159216	0.0000004
EARTH	2034-04-13 04:22	< 1 min	0.1949761	0.1949742	0.0000006
EARTH	2042-10-14 16:46	< 1 min	0.0376964	0.0376959	0.0000002
EARTH	2051-10-11 05:50	< 1 min	0.0292941	0.0292933	0.0000003
EARTH	2053-02-06 13:11	< 1 min	0.1187822	0.1187773	0.0000016
EARTH	2062-01-04 12:55	1.2	0.1025545	0.1025538	0.0000003
VENUS	2067-10-22 11:41	< 1 min	0.0449432	0.0449373	0.0000020
EARTH	2070-10-12 01:43	< 1 min	0.0170348	0.0170149	0.0000066
EARTH	2072-02-03 15:11	< 1 min	0.1888632	0.1888466	0.0000055
EARTH	2079-10-11 06:39	1.5	0.0537808	0.0535577	0.0000744
EARTH	2081-02-06 03:52	1.9	0.1050960	0.1048938	0.0000674
VENUS	2081-05-04 08:29	12.3	0.0398377	0.0398059	0.0000107
EARTH	2088-10-14 23:10	6.5	0.1995127	0.1989223	0.0001968
EARTH	2090-02-04 03:24	53.1	0.0394845	0.0388390	0.0002152
EARTH	2098-11-13 15:13	203.2	0.1028174	0.1025431	0.0000915
EARTH	2107-10-13 09:18	17.3	0.1217728	0.1199711	0.0006006
EARTH	2109-02-08 19:36	13.4	0.0163382	0.0145600	0.0005938
VENUS	2110-04-04 18:55	88.6	0.0371520	0.0364083	0.0002606
EARTH	2116-10-15 20:22	323.4	0.1538990	0.1200510	0.0112845
EARTH	2118-02-09 13:20	130.6	0.0219885	0.0025678	0.0129997
VENUS	2121-12-10 02:12	> 1 w	0.0383307	0.0307704	0.0214937
EARTH	2125-10-25 16:24	> 1 mo	0.0598335	0.0047727	0.1174238

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
251.65168040	36.38177417	0.00389829	MINIMUM
112.60984018	277.60756056	0.00452140	MINIMUM
181.91778762	336.77944386	0.11643304	SADDLE
2.74919697	157.62207943	0.24951992	SADDLE
2.67520271	337.54766809	1.75224639	SADDLE
181.98276940	156.84403746	2.11774132	MAXIMUM

Download:

MOID Plots

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