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 ]  
1899 Crommelin (1971 UR1)
Classification: Main-belt Asteroid          SPK-ID: 2001899
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1059203716445375 3.7006e-08  
a 2.265166591688211 6.5964e-09 au
q 2.025239304459805 8.4291e-08 au
i 7.275768559140543 3.6387e-06 deg
node 52.12610745663441 2.882e-05 deg
peri 128.1514221157546 3.291e-05 deg
M 319.8341993432217 1.5648e-05 deg
tp 2459139.432092303568
(2020-Oct-16.93209230)
5.4176e-05 TDB
period 1245.227342949632
3.41
5.4393e-06
1.489e-08
d
yr
n .2891038347642206 1.2628e-09 deg/d
Q 2.505093878916616 7.295e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3378  
   data-arc span      25957 days (71.07 yr)  
   first obs. used      1949-03-31  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36472  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:32:05  

Additional Information
 Earth MOID = 1.03589 au 
 Jupiter MOID = 2.46378 au 
 T_jup = 3.599 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456524.5 (2013-Aug-20.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1058125791112715 3.7075e-08  
q 2.025321529518374 8.4417e-08 au
tp 2456649.346265865993
(2013-Dec-22.84626587)
5.4304e-05 TDB
node 52.14923433004108 2.8823e-05 deg
peri 128.1967150258741 3.2905e-05 deg
i 7.27601164684626 3.6387e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3378  
   data-arc span      25957 days (71.07 yr)  
   first obs. used      1949-03-31  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36472  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:32:05  

Additional Information
 Jupiter MOID = 2.46378 au 
 T_jup = 3.599 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.374520270234129E-15 -3.122140583824913E-15 1.027312879374054E-14 3.797980234980071E-15 3.186577166549003E-14 -2.056523855322745E-15
q -3.122140583824913E-15 7.126277361072474E-15 -5.748553553984442E-14 -8.90720315678862E-15 -8.351803940156049E-14 4.808953308302686E-15
tp 1.027312879374054E-14 -5.748553553984442E-14 2.948968700171996E-9 -2.87784890655733E-12 8.733162139062942E-10 2.08806274518509E-12
node 3.797980234980071E-15 -8.90720315678862E-15 -2.87784890655733E-12 8.307515545670628E-10 -8.244031103604978E-10 -2.205398176337899E-11
peri 3.186577166549003E-14 -8.351803940156049E-14 8.733162139062942E-10 -8.244031103604978E-10 1.082742835799159E-9 2.242856414407071E-11
i -2.056523855322745E-15 4.808953308302686E-15 2.08806274518509E-12 -2.205398176337899E-11 2.242856414407071E-11 1.324032303140613E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO452187  
diameter diameter 5.332 km 0.585 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.0393 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.122   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1899 Crommelin (1971 UR1)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1971 UR1 = 1949 FU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-26 18:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin