Asteroids

2017RN16 help

Last update: 2025-04-18 00:06 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.862

Aphelion (Q)

1.538

Eccentricity (e)

0.282

Inclination (i)

2.0

deg

Orbit period (P)

480.3

Earth MOID

0.00074

U parameter

7.2

Next Earth close approach

Date

2042-09-08

Nominal distance (from Earth center)

0.02753

4118760

Maximum Brightness

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

4 - 9*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-09-15

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

1.200288

1-sigma variation

0.000201

Unit

Eccentricity (e)

Value

0.281690

1-sigma variation

0.000288

Unit

Inclination (i)

Value

1.9695

1-sigma variation

0.0168

Unit

Long. of Ascending Node (Ω)

Value

169.4041

1-sigma variation

0.4432

Unit

Arg. of Perihelion (ω)

Value

109.0738

1-sigma variation

0.4597

Unit

Mean Anomaly (M)

Value

331.12195

1-sigma variation

0.79946

Unit

Perihelion distance

Value

0.862179

1-sigma variation

Unit

Aphelion distance

Value

1.538397

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.223992

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.005592

1-sigma variation

Unit

MOID

Value

0.000737

1-sigma variation

Unit

Orbit Period

Value

480.3157

1-sigma variation

Unit

U parameter

Value

7.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.04848E-8	5.78677E-8	-3.37143E-6	-8.91817E-5	9.24996E-5	-1.60859E-4
e	5.78677E-8	8.27146E-8	-4.81902E-6	-1.27474E-4	1.32216E-4	-2.29927E-4
i	-3.37143E-6	-4.81902E-6	2.80761E-4	7.42674E-3	-7.70304E-3	1.33958E-2
Ω	-8.91817E-5	-1.27474E-4	7.42674E-3	1.96453E-1	-2.03762E-1	3.54348E-1
ω	9.24996E-5	1.32216E-4	-7.70304E-3	-2.03762E-1	2.11343E-1	-3.67531E-1
M	-1.60859E-4	-2.29927E-4	1.33958E-2	3.54348E-1	-3.67531E-1	6.39145E-1

Date of computation: 2025-03-29 00:36 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

29.015

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

4 - 9*

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

[-]

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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

2767

Unit

Source

[1]

Normalized RMS of residuals

Value

0.551484

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-09-12.31378

Unit

Source

[2]

Last Observation

Value

2017-09-20.308696

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

17 (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 2017RN16 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	1950-09-09 06:56	> 1 w	0.0119662	0.0022361	0.2306751
EARTH	1959-09-13 08:21	> 1 d	0.0324458	0.0018954	0.0803004
EARTH	1963-04-03 00:28	> 1 d	0.1896391	0.0172046	0.0623950
EARTH	1972-04-12 09:05	636.4	0.0259525	0.0182267	0.0044659
EARTH	1981-04-16 23:32	> 1 d	0.0327662	0.0182851	0.0455924
EARTH	1990-05-23 09:44	> 1 w	0.1361358	0.0637499	0.0243109
EARTH	1999-07-03 15:55	> 1 w	0.1624782	0.1550218	0.0025187
EARTH	2008-08-16 07:07	> 1 w	0.1111246	0.0654548	0.0152460
EARTH	2017-09-10 22:15	< 1 min	0.0033329	0.0033241	0.0000029
EARTH	2021-06-28 12:31	> 1 d	0.1565582	0.1557143	0.0002840
EARTH	2025-04-17 05:35	> 1 d	0.0300853	0.0219767	0.0125470
EARTH	2042-09-08 09:02	> 1 d	0.0275322	0.0001493	0.0346830
EARTH	2046-05-21 16:06	> 1 w	0.1238725	0.0648166	0.0198783
EARTH	2063-08-29 17:17	> 1 mo	0.0790250	0.0023915	0.2874651
EARTH	2067-04-30 04:50	> 1 mo	0.0762528	0.0209684	0.2824871
EARTH	2084-08-05 19:00	> 1 w	0.1280731	0.0658152	0.0209732
EARTH	2088-04-19 22:34	> 1 w	0.0266615	0.0220754	0.0682345
EARTH	2105-08-19 14:03	> 1 mo	0.1050754	0.0078985	0.7930929
EARTH	2109-04-29 15:25	> 1 mo	0.0719351	0.0214194	1.0711751

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
55.03298415	246.76540257	0.00073664	MINIMUM
304.98209747	105.68195034	0.02201780	MINIMUM
359.80460449	175.91432188	0.15705215	SADDLE
180.00545973	356.29680532	0.55615100	SADDLE
0.18775034	356.43856410	1.84561376	SADDLE
180.16025340	176.41275824	2.55435036	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2017RN16

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2076-09-11.211	79557.211	-1.539	0.82 ± 0.002	1.64E5	2.22E-6	9.31E-9	-7.75
2086-09-11.626	83209.626	0.355	0.60 ± 0.000	8.19E7	1.46E-8	6.16E-11	-10.01
2091-09-11.702	85035.702	1.476	1.56 ± 0.001	4.56E5	4.05E-7	1.72E-9	-8.59
2091-09-11.810	85035.810	0.351	1.21 ± 0.000	1.66E6	7.47E-7	3.16E-9	-8.33
2092-09-10.886	85400.886	-2.069	0.62 ± 0.002	1.65E5	9.55E-7	4.01E-9	-8.23
2095-09-11.191	86496.191	1.497	1.49 ± 0.003	1.05E7	2.07E-8	8.76E-11	-9.91
2095-09-11.797	86496.797	0.348	1.08 ± 0.001	2.08E6	4.73E-7	2.00E-9	-8.55
2100-09-12.042	88323.042	0.588	1.26 ± 0.000	2.16E5	4.18E-6	1.77E-8	-7.63
2100-09-12.131	88323.131	0.351	1.15 ± 0.000	6.97E6	1.38E-7	5.85E-10	-9.11
2103-09-12.566	89418.566	1.467	0.86 ± 0.000	1.10E6	3.62E-7	1.54E-9	-8.71
2104-09-11.906	89783.906	0.792	1.22 ± 0.000	1.47E4	4.70E-5	1.99E-7	-6.60
2106-09-12.319	90514.319	4.168	1.37 ± 0.000	3.14E5	4.95E-10	2.12E-12	-11.59
2107-09-12.693	90879.693	4.756	0.21 ± 0.005	3.18E5	5.18E-11	2.23E-13	-12.57
2108-09-11.886	91244.886	0.805	0.62 ± 0.000	4.41E5	2.07E-6	8.76E-9	-7.98
2108-09-11.946	91244.946	-1.857	1.28 ± 0.000	1.24E6	1.47E-7	6.16E-10	-9.13
2115-09-12.735	93801.735	4.689	0.94 ± 0.000	3.77E5	5.02E-11	2.16E-13	-12.62
2117-09-12.015	94532.015	3.848	1.24 ± 0.000	1.25E5	4.49E-9	1.92E-11	-10.68
2120-09-11.873	95627.873	-1.378	1.65 ± 0.127	1.54E8	8.25E-10	3.46E-12	-11.44
2120-09-12.378	95628.378	-1.601	1.64 ± 0.002	2.62E6	3.92E-8	1.64E-10	-9.76
2121-09-12.126	95993.126	1.802	1.64 ± 0.000	9.53E5	7.33E-8	3.11E-10	-9.49


Based on 17 optical observations (of which 0 are rejected as outliers) from 2017/09/12.314 to 2017/09/20.309.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.70 and 1.70 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250305 091708.688 UTC.

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