Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
74784 (1999 RH250)
Classification: Main-belt Asteroid          SPK-ID: 2074784
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1622870522516325 4.8755e-08  
a 2.263490686726055 7.8854e-09 au
q 1.89615545537826 1.0943e-07 au
i 5.328666994133689 5.1991e-06 deg
node 358.3565733075667 4.2183e-05 deg
peri 155.8406201413953 4.3604e-05 deg
M 126.5204505729222 1.1493e-05 deg
tp 2458163.355796709300
(2018-Feb-13.85579671)
3.9031e-05 TDB
period 1243.845658721775
3.41
6.4998e-06
1.78e-08
d
yr
n .2894249760617006 1.5124e-09 deg/d
Q 2.630825918073849 9.1651e-09 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      7377 days (20.20 yr)  
   first obs. used      1999-08-22  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5326  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:49:33  

Additional Information
 Earth MOID = .907827 au 
 Jupiter MOID = 2.35998 au 
 T_jup = 3.595 
[ 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 15.4   n/a MPO436306  

74784 (1999 RH250)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RH250 = 1999 TZ274 = 2000 YN104 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-16 08:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin