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120870 (1998 RM16)
Classification: Main-belt Asteroid          SPK-ID: 2120870
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1635421138070827 4.0101e-08  
a 2.1709890709885 8.903e-09 au
q 1.815940929266966 9.0902e-08 au
i 2.126512070481966 3.6983e-06 deg
node 283.4938081163548 0.00010092 deg
peri 39.68852554965298 0.00010144 deg
M 357.2537784339769 1.1705e-05 deg
tp 2459209.412877861960
(2020-Dec-25.91287786)
3.8013e-05 TDB
period 1168.38206720237
3.20
7.1871e-06
1.968e-08
d
yr
n .308118388757884 1.8953e-09 deg/d
Q 2.526037212710034 1.0359e-08 au
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      8534 days (23.36 yr)  
   first obs. used      1997-03-03  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54715  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:31  

Additional Information
 Earth MOID = .802165 au 
 Jupiter MOID = 2.77311 au 
 T_jup = 3.670 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.93   n/a E2021B55  

120870 (1998 RM16)          Discovered 1998-Sep-11 by ODAS at Caussols
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1913-Jul-02 05:31 00:03 Eunom 0.0400944320093535 0.0400882752896726 0.040100593801961 3.98148599748649 3.98148590955091 2419950.729603434 3.0272658924355 780.215989339286 42.3419248588505 67.0357385834363 130327.046400486 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 17:08:32 2021-Apr-13 17:08
2185-Jul-28 19:39 < 00:01 Hebe 0.0172910389234056 0.0172654329909402 0.0173166529125682 5.84323959299006 5.84323953146065 2519324.318479660 0.559400979285224 1405.85160989403 39.3760896471574 24.7637098357225 27557.1832828358 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 17:08:32 2021-Apr-13 17:08

Alternate Designations
 1998 RM16 = 1997 EC29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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