Asteroids

2016YH help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.359

Aphelion (Q)

1.005

Eccentricity (e)

0.474

Inclination (i)

2.2

deg

Orbit period (P)

205.5

Earth MOID

0.00754

U parameter

8.0

Next Earth close approach

Date

2025-12-13

Nominal distance (from Earth center)

0.01792

2680703

Maximum Brightness

17.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.6

mag

Diameter

20 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2016-12-18

Observatory

Mt. Lemmon Survey

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

0.681546

1-sigma variation

0.000147

Unit

Eccentricity (e)

Value

0.473972

1-sigma variation

0.000342

Unit

Inclination (i)

Value

2.2181

1-sigma variation

0.0026

Unit

Long. of Ascending Node (Ω)

Value

266.0136

1-sigma variation

0.0122

Unit

Arg. of Perihelion (ω)

Value

0.4030

1-sigma variation

0.0125

Unit

Mean Anomaly (M)

Value

128.92527

1-sigma variation

1.91168

Unit

Perihelion distance

Value

0.358512

1-sigma variation

Unit

Aphelion distance

Value

1.004581

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.659020

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.020436

1-sigma variation

Unit

MOID

Value

0.007538

1-sigma variation

Unit

Orbit Period

Value

205.5141

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.14671E-8	-5.01657E-8	-3.83637E-7	1.78171E-6	-1.82606E-6	-2.80093E-4
e	-5.01657E-8	1.17230E-7	8.96511E-7	-4.16361E-6	4.26719E-6	6.54539E-4
i	-3.83637E-7	8.96511E-7	6.85863E-6	-3.18401E-5	3.26295E-5	5.00551E-3
Ω	1.78171E-6	-4.16361E-6	-3.18401E-5	1.47877E-4	-1.51556E-4	-2.32469E-2
ω	-1.82606E-6	4.26719E-6	3.26295E-5	-1.51556E-4	1.55375E-4	2.38255E-2
M	-2.80093E-4	6.54539E-4	5.00551E-3	-2.32469E-2	2.38255E-2	3.65452E0

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

25.625

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

20 - 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

3263

Unit

Source

[1]

Normalized RMS of residuals

Value

0.571247

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2016-12-18.25291

Unit

Source

[2]

Last Observation

Value

2016-12-24.160596

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

74 (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 2016YH 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	1953-12-13 16:59	> 1 d	0.0173945	0.0130904	0.0017773
EARTH	1962-12-12 15:24	> 1 d	0.0153693	0.0096870	0.0084869
EARTH	1971-12-15 05:15	> 1 d	0.0182266	0.0118594	0.0051650
EARTH	1980-12-20 02:37	> 1 d	0.0199866	0.0192095	0.0005365
EARTH	1989-12-24 04:49	> 1 d	0.0171791	0.0114820	0.0021818
EARTH	1994-11-30 22:46	461.9	0.1994614	0.1442307	0.0184382
EARTH	1998-12-25 19:18	> 1 d	0.0153762	0.0091911	0.0064013
EARTH	2007-12-21 08:37	> 1 d	0.0203906	0.0174131	0.0013301
EARTH	2016-12-15 17:46	< 1 min	0.0197157	0.0196631	0.0000175
MERCURY	2017-10-11 13:35	163.3	0.0424937	0.0385097	0.0014210
MERCURY	2019-06-20 05:16	554.1	0.0334432	0.0319408	0.0021468
MERCURY	2021-02-25 23:14	1078.7	0.0329077	0.0321221	0.0026471
MERCURY	2022-11-04 19:41	> 1 d	0.0395276	0.0326615	0.0093431
EARTH	2025-12-13 23:28	> 1 d	0.0179194	0.0110562	0.0030831
EARTH	2034-12-13 06:47	> 1 d	0.0166775	0.0094966	0.0054170
EARTH	2043-12-16 21:37	> 1 d	0.0198512	0.0164675	0.0012992
EARTH	2052-12-20 03:18	> 1 d	0.0198996	0.0175367	0.0009097
EARTH	2061-12-24 02:57	> 1 d	0.0169267	0.0108146	0.0049281
EARTH	2070-12-23 22:41	> 1 d	0.0174178	0.0112467	0.0037843
EARTH	2079-12-22 07:09	647.7	0.0193083	0.0182040	0.0003894
EARTH	2088-12-16 06:45	> 1 d	0.0203390	0.0175241	0.0011637
EARTH	2097-12-11 23:02	> 1 d	0.0157137	0.0078569	0.0074607
MERCURY	2099-11-27 12:00	> 1 d	0.0484248	0.0327872	0.0295066
MERCURY	2101-08-05 19:26	> 1 d	0.0400732	0.0324770	0.0198928
MERCURY	2103-04-14 02:43	> 1 d	0.0346100	0.0322240	0.0099860
MERCURY	2104-12-20 12:08	> 1 d	0.0320468	0.0320228	0.0007797
MERCURY	2106-08-28 22:06	1191.3	0.0333411	0.0319435	0.0041251
EARTH	2106-12-14 15:30	> 1 d	0.0176043	0.0114223	0.0022442
MERCURY	2108-05-06 01:08	508.5	0.0355466	0.0316094	0.0028446
MERCURY	2110-01-12 10:57	260.3	0.0399993	0.0378798	0.0008216
MERCURY	2111-09-20 22:22	1189.4	0.0457280	0.0343730	0.0062752
EARTH	2115-12-18 00:26	> 1 d	0.0199056	0.0181033	0.0009331
EARTH	2124-12-21 20:23	> 1 d	0.0194798	0.0150206	0.0034605

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
160.96257141	333.17312201	0.00753498	MINIMUM
199.88162098	356.19028264	0.00823399	MINIMUM
180.52813353	344.73984339	0.02034390	SADDLE
1.23520787	165.58915079	0.65717181	SADDLE
1.19549106	345.54119842	1.34276294	SADDLE
180.46261727	164.70895284	2.02027266	MAXIMUM

Download:

MOID Plots

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