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 ]  
1577 Reiss (1949 BA)
Classification: Main-belt Asteroid          SPK-ID: 2001577
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1667903833750836 3.1133e-08  
a 2.229924184932886 5.0222e-09 au
q 1.857994275230559 6.9173e-08 au
i 4.355811004334684 3.7011e-06 deg
node 123.5445731529491 4.4926e-05 deg
peri 266.3846684240435 4.6327e-05 deg
M 208.9230888713194 1.2303e-05 deg
tp 2459510.921746864177
(2021-Oct-23.42174686)
4.2416e-05 TDB
period 1216.280022528341
3.33
4.109e-06
1.125e-08
d
yr
n .2959844717762036 9.9993e-10 deg/d
Q 2.601854094635213 5.8599e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2538  
   data-arc span      32235 days (88.25 yr)  
   first obs. used      1931-10-06  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48174  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:07:02  

Additional Information
 Earth MOID = .86927 au 
 Jupiter MOID = 2.84058 au 
 T_jup = 3.621 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455929.5 (2012-Jan-03.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1666253960795044 3.1044e-08  
q 1.858932571644602 6.899e-08 au
tp 2455860.910198817277
(2011-Oct-26.41019882)
3.7975e-05 TDB
node 123.6085878691051 4.4905e-05 deg
peri 266.2421928545151 4.6321e-05 deg
i 4.35625787569049 3.7023e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2538  
   data-arc span      32235 days (88.25 yr)  
   first obs. used      1931-10-06  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48174  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:07:02  

Additional Information
 Jupiter MOID = 2.84058 au 
 T_jup = 3.621 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.637263573765999E-16 -2.13773796418593E-15 -2.146648714321467E-13 -6.102404075206096E-15 -7.752403604639762E-14 -8.397250471435576E-16
q -2.13773796418593E-15 4.759664658483005E-15 5.169795723246743E-13 1.274488796646092E-14 1.841820432187343E-13 1.830487895802177E-15
tp -2.146648714321467E-13 5.169795723246743E-13 1.442113414785529E-9 -2.25341541061972E-12 4.423212590574869E-10 -5.053453182240907E-13
node -6.102404075206096E-15 1.274488796646092E-14 -2.25341541061972E-12 2.016454053425359E-9 -2.010478246372098E-9 3.525692381376752E-11
peri -7.752403604639762E-14 1.841820432187343E-13 4.423212590574869E-10 -2.010478246372098E-9 2.145663213385417E-9 -3.52929882659617E-11
i -8.397250471435576E-16 1.830487895802177E-15 -5.053453182240907E-13 3.525692381376752E-11 -3.52929882659617E-11 1.37072311333959E-11

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 12.6   n/a MPO473785  
diameter diameter 5.615 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.5050 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm]
[Melton, E.; Carver, S.; Harris, A.; Karnemaat, R.; et al. (2012) Minor Planet Bull. 39, 131-133.]
[Benishek, V. (2019) Minor Planet Bull. 46, 341-345.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.322   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1577 Reiss (1949 BA)          Discovered 1949-Jan-19 by Boyer, L. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1949 BA = 1931 TG3 = 1934 PX = 1981 RM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-22 02:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin